Director: Xavier Dolan
Cast: Antoine Olivier Pilon, Suzanne Clement, Anne Dorval
Certificate: 15

"We still love each other, right?" "That's what we're best at, buddy."

That's Steve and his mum, Die, in Xavier Dolan's new film, Mommy. When she says it, it really means something - because we see exactly what she goes through.

Steve is a handful, to say the least, the kind of troublemaker who gets kicked out of a juvenile institute for setting the canteen on fire. Looking after him, then, is a lot of work for a single mum, not to mention a single mum with no job.

Antoine Olivier Pilon is superb as the hyperactive, hyper-excitable, hyper-aggressive teen, one moment saying sweet things to his mum, then next blowing up in her face. But he's nothing compared to the enfant terrible behind the camera.

At the tender age of 25, Xavier Dolan has already notched up several impressive films, doing everything from writing and directing to starring and designing the costumes - often all at the same time. Here, he crafts his most mature and impressive film yet: one that knocks you for six, both technically and emotionally. The entire film is shot in a tight 1:1 aspect ratio, a square that leaves vertical black bars hemming in our couple. Halfway through, the trap expands to fill the full width of the screen: a brief moment where you feel Steve's freedom, before it's yanked away again. It's a stunning little slice of cinema. The fact that it's accompanied by Oasis makes it even more impressive.

For all the careful construction, though, Dolan gives his cast maximum room to shine; Pilon may dominate, but Suzanne Clement steals scenes as his susceptible, stammering neighbour, Kyla, who brings out the best and worst in the boy. Anne Dorval, though, emerges as the real star. Tender and tough, her mother does everything it takes for her boy, especially when she doesn't want to. After one key decision, you expect the film to stop, but it keeps going. As violence, tragedy and humour collide, this mess of human emotion is gloriously unabashed to witness. Through all the ups and downs, Dolan captures one constant truth: these characters love each other. And they're damn good at it.

Director: Susanne Bier
Cast: Nikolaj Coster-Waldau, Ulrich Thomsen, Maria Bonnevie
Certificate: 15

When it comes to getting natural performances out of actors, Susanne Bier is one of the best directors in the business. A Second Chance is no exception.

Director: Morgan Matthews
Cast: Asa Butterfield, Sally Hawkins, Rafe Spall
Certificate: 12A

How do you define love mathematically? It's a challenge that's almost as impossible as discovering the formula for a brilliant film. X+Y, an absolutely charming new British movie out now in cinemas, manages to do both.

Start with a young teenage boy on the autism spectrum (Nathan), take away his dad so only he and his mum (Julie) remain, then plus the International Mathematical Olympiad, a globe-trotting competition Nathan would be very good at, and an equally anti-social teacher (Martin), who has a habit of getting high.

Factor in a rude rival (Jakes Davies' tragic Luke), a pretty overseas student (Zhang Mei) and a potential teacher-parent romance and the result reads like a pile of coming-of-age cliches.

Then, subtract any cheesy awkwardness and divide the potential mawkishness between a cast of fantastic actors: Asa Butterfield is a huge positive as the lonely genius; Rafe Spall and Eddie Marsan double the total laughs with their abrasive and likeable presence. Combine this with Sally Hawkins, who steals the show as Nathan's earnest, shut-out mother, who counts her son's prawn balls at the local Chinese takeaway with arithmetic precision.

Raise all that by Morgan Matthews' gentle direction and square it with the script's calculatedly unconventional sports movie structure. Triple the emotional impact with a heart-breaking monologue from Spall, minus any easy happy ending for him and Julie, and times it by a final speech from Hawkins, who lands upon the correct solution to defining affection as a variable. The sum effect is exponentially adorable, a moving, sincere drama that feels like it has a real value: add this film to your life and it will multiply your happiness. Deduct it and you will be infinitely missing out on a quantifiable gem.

X+Y =

Director: Glenn Ficarra, John Requa
Cast: Will Smith, Margot Robbie
Certificate: 15

Will Smith. The goatee man's Tom Cruise. Both have been reported saying bizarre things off-screen, but when the camera's on, they're charisma machines, almost impossible to resist in any role.

Smith dials the suave up to maximum for Focus, in which he plays a con artist - not just a con artist, mind, but one of the greatest con artists of all time. Even better than Adrian Lester off Hustle. Fans of the genre will be familiar with the game plan: set up a mark, establish an insider, take them for everything they've got. Focus, though, gives us a different take on the grifting system: Smith's Nicky is the head of a large team, which swoops into town on big occasions and performs countless mini-cons, until everyone's wallets in the area have been lifted. Then, they cash up, sell on, and move out.

Of course, there's a woman involved too. That's Margot Robbie, who plays wannabe thief Jess. Fresh from her turn in The Wolf of Wall Street, Robbie impresses with excellent coming timing, both physical and verbal - a sparky presence that Smith goes toe to toe with. Their obligatory flirting scenes are hugely enjoyable to watch, with each star competing to see who can charm the audience's pants off first. But their chemistry comes alive in her introduction to his world: a dizzying display of deceptions that sees them both working marks, before building up to a faintly ludicrous - yet perfectly tolerable - showdown at a football event that is, for legal reasons, definitely not the Super Bowl.

Here, the film reveals just how much Will Smith brings to the table, convincing as a recovering gambling addict - complete with tear-filled eyes - while a panicked Jess tries to keep his urges in check. Not against using people as unwitting pawns, it's a neat turning point for the script. The problem is that it's also only the halfway mark: we then leap forward three years for a final half that, sure enough, does seem to involve a big con and lots of money after all.

It's the start of a disappointing conclusion to Glenn Ficarra and John Requa's script, but the directors give events as much polish as they can: cleverly ducking in and out of mirrors, their cameras make everything look so glossy it's like watching an Argos catalogue come to life. Across the laminated pages of dreams dance our glamorous couple, accompanied by Nick Urata's uber-stylish score. The ending takes a leaf out of Agatha Christie's book of left field twists - along with an arguably dated stereotype - but with Smith's charisma machine turned up to 11, it's hard not to get swept up in the sheer sassiness of it all.

Director: Kornél Mundruczó Cast: Zsófia Psotta Certificate: 15

Rise of the Planet of the Dogs. If your ears have already perked up, then White God is for you.

The Hungarian film takes the suspense, humour and scares of sci-fi and combines them with, well, dogs. 13 year old Lili loves her pet, Hagen. But when her father refuses to look after the mutt - "mixed-breed", she corrects him - Hagen ends up a stray on the streets.

While she attends band rehearsals and sneaks out to search for her pal, Hagen falls in with a pack of wild dogs - and even wilder humans. He is quickly kidnapped by dog-fighters, who force him into the backstreet ring along with other, unfortunate animals.

Eventually, though, something snaps.

Director Kornél Mundruczó doesn't shy away from the nastiness of it all; the dog fighting sequences are so brutal they make Amores Perros look like The Aristocats. But that graphic approach is even truer when it comes to the second half of the film: an uprising that's part-fable, part-social commentary and 100 per cent terrifying.

The Hungarian hounds storm through the deserted streets - a eerily stunning spectacle that opens the film and prompts you to wonder why on earth man's best friend has become his worst nightmare. Zsófia Psotta's young girl glides through the chaos serenely on a bicycle; a sight that's at once both amusingly surreal and breathtakingly surprising. Mundruczó brings real flair to proceedings, cueing up horror film tropes galore, as Hagen gets his own back. But where footsteps in a corridor or silhouettes in doorways could be played for laughs, the earnest Psotta - and the very immediate threat of the non-CGI beasts - give this a chilling plausibility and a pointed bite.

A cautionary tale about the abuse of animals, Viktória Petrányi and Kata Wéber's screenplay, it's an unabashedly feral thriller that gnashes and thrashes its way through your nervous system, until climaxing with a bizarre, beautiful final shot that blares a haunting horn over the sea of rabid hunters. Rise of the planet of the dogs? The Birds with teeth? Homeward Bound for adults? From its haunting images to its fervent love of trumpets, White God is a monster all of its own. Paws-itively brilliant.

For a film a called Jupiter Ascending, Jupiter spends a lot time falling from things.

At the start, Jupiter Jones is a cleaner in Chicago who discovers that she is actually a princess - mostly thanks to the explosive arrival of former soldier Caine (Channing Tatum), who stops a gang of aliens from trying to kill her. Part wolf and all man, he has pointy ears, a goatee worthy of Murray from Flight of the Conchords and hover boots. He's the perfect fantasy romantic interest - except for the fact that he's caught up in a war between the members of the universe's richest royals, the Abrasax family, who are all squabbling over whom inherits a precious resource.

On the surface, The Wachowskis' film appears to be impressively forward-thinking: a female lead, an anti-capitalist plot, an open embrace of inter-species relations, a surprising decision not to kill Sean Bean off in the opening act, and even a large chunk of screen time devoted to flying footwear, which is sorely underrepresented in modern cinema. Underneath it all, though, is a tale that's old-fashioned in all the wrong ways.

The Wachowskis deliver the eye-popping array of galactic cities, impossible gadgets and swooping shoot-outs with the colour and imagination of kids at an old-school matinee. But all the cor-blimey CGI in the universe can't give life to their script, which revolves around the biggest waste of a female character since that blonde one from Indiana Jones and the Temple of Doom.

Jupiter is meant to be a protagonist to cheer on, as she claims her title and upsets the plans of evil monarch Balem Abrasax (Redmayne). But she spends almost all of her time in danger, waiting for Channing Tatum's hero to rescue her. If she isn't falling from a high object, she's climbing up a ladder so she's ready to fall from a high object - a state of perpetual peril that robs her of agency in her own story.

That lack of substance leaves you little to engage with, unless you really like people falling off things or blokes with floating trainers. Equally bad is that it leaves the screenplay with no way to develop, instead descending into a string of escalating carnage: a series of set pieces with bigger guns and taller ladders. Every scene seems to end in one of two ways: a ship crashing into something, or another ship miraculously appearing to ferry people away to the next. When it turns out that destruction on Earth can be fixed in the blink of an eye, any stakes go out the window.

Through it all, Kunis does her best to give her princess some depth, but with no impact on the events around her, her lack of dimensions leaves you looking elsewhere for fun characters and coming up short. Sean Bean's gruff army veteran is mired in duff dialogue - "Bees are programmed to recognise royalty," he says, with a straight face - and Eddie Redmayne's whispering villain is hilariously awful. The only thing left to admire is Tatum's lupine lover. And his magic shoes.

The costumes are certainly shiny and the hair suitably gravity defying, but sadly, no amount of Flash Gordon retro sparkle can make this enjoyable. It's important to appreciate a film as the type of movie it aims to be. Jupiter Ascending, though, doesn't aim to be dumb and formulaic: it aims to be operatic and exciting, with a female right at its centre. A brief interlude in a Kafka-esque office building gives you a glimpse of what might have been. As it stands, Jupiter Ascending is a great hover boots movie, but it's a duff anything else movie. By the time you start picking apart the world's internal logic (how do Caine's hover boots work after he's put on a spacesuit?), you realise that you've completely disconnected from what's on screen.

The result is a dazzling, but painfully dated tale of a damsel in distress that has everything in reverse. If you play Jupiter Ascending backwards, it's the story of a woman who is repeatedly abandoned by a guy in dangerous situations but finds her own way out, before ultimately deciding to make her own living as a cleaner. If you play it forwards, it's a dull disappointment.

Director: Julius Avery
Cast: Ewan McGregor, Alicia Vikander, Brenton Thwaites
Certificate: 15

Son of a gun! When was the last time you heard anyone say that? It would fit right in with Julius Avery's film, which is full of equally clunky chunks of dialogue.

"Things are not what they seem," warns public enemy number one, Brendan, to prison newbie JR (Thwaites). Then he gets out a chess set and begins an unsubtle metaphor about thinking ahead of your opponent. "You can get checkmate in four," offers JR.

Taken under the convict's wing, the teen soon finds himself assisting in an escape and a heist. But can he really trust his mentor? Can he fit in with the hardened criminals? And who will win that all important game of chess?

Things unfold in a predictably unpredictable fashion, as JR's coming of age journey takes us from Starred Up-like jail time to Godfather-like gangster drama via film noir-like forbidden romance; a mix of genre tropes that sounds haphazard.

But things are not what they seem.

What could be cheesy or uneven on the page works surprisingly well on the screen, thanks to an excellent match of people in front of and behind the camera. Thwaites is ideal as the naive apprentice, ambitious but always looking slightly uncomfortable in his expensive leather jacket. Alicia Vikander is typically unrecognisable (and excellent) as token moll Tasha, torn between obeying orders and helping her lover.

It's Ewan McGregor, though, steals the show as the ruthless lawbreaker. It's a treat to see the actor play against type, complete with tattoos and facial hair. (Given the last time Ewan went full beard was Star Wars, seeing Obi-Wan shoot people is shockingly effective.) In fact, this feels like a return to form for the actor, who sinks his teeth into the meaty role with a physical presence he rarely displays - don't be surprised if you come out of the cinema thinking "McGregornaissance".

Avery, meanwhile, holds it all together with a pace that drives up the tension, even as the script threatens to veer off down a side road. He juggles aesthetics to match the changing tone, from the handheld indie opening that nails the oppressive claustrophobia of being behind bars to the riveting blockbuster-like escape sequence, complete with helicopter. His cast are with him every step, right down to the decision to retain Ewan's broad brogue accent, rather than try to emulate an Australian one; this is a film smart (and confident) enough to leave some questions unanswered, even as it spells out others a little too eagerly. Halfway between Hollywood and Australia, if this is a calling card for an upcoming filmmaker, it's an extremely gripping one. Checkmate? Not quite. But son of a gun, it's good.

Director: James Kent Cast: Alicia Vikander, Kit Harington, Colin Morgan Certificate: 12A

Another British war movie marches on UK cinemas this month, but Testament of Youth brings a rousing new side of WWI to the screen. Based on the memoir of Vera Brittain, it arrives hot on the heels of The Imitation Game, yet couldn't be more different; this is poetry to its maths; literature to its science; female to its male.

While it might sound reductive to associate romantic verse with women, it's indicative of the time in which Vera lived. When she tells her parents (an enjoyably uptight Emily Watson and Dominic West) that she wants to go to Oxford instead of marry a fine, rich fellow, they strongly disapprove. But go she does, only to fall for Roland (Kit Harington), a friend of her brother (Kingsman's Taron Egerton), who shares her ambitions of becoming a professional writer. Inevitably, war breaks out - and Roland is shipped overseas, along with her brother and his friends.

Normally, at this point, we would follow the soldiers through the mud and blood of the trenches. But Testament of Youth lingers on British soil, as Vera struggles to cope with life - and a seemingly endless wave of loss. That oft-overlooked focus is what gives Testament of Youth, an otherwise tame movie, its emotional heft. Director James Kent shoots the period scenes solidly, but the cast elevates the movie above its practical presentation.

It helps that it is compromised of so many excellent young actors. Colin Morgan, Taron Egerton, Kit Harington and Jonathan Bailey all play the central men and their fresh faces only emphasise the tragedy of conflict. In the middle of it all, Alicia Vikander is breathtaking as Vera; beautiful, sad and almost trembling with a passion kept beneath the surface. Quitting Oxford to volunteer as a nurse, she is determined to match the male sacrifice on the field with a female act at home. The fact that we spend more time with her than on the front gives the occasional intrusions of brown and red on the bright domestic palette an impact that could well have been lacking from a more familiar tale. Indeed, Vera's seminal tale is less a war film (or even a wartime romance) and more a film about a woman striving to overcome the war; even Harington, Morgan and Vikander's love triangle, complete with letter-writing (that most perilous feature of period drama), manages to move.

By the end of WWI, as society appears not to have learned anything from the past four years, Vera delivers a heartfelt speech about grief, reconciliation and those left behind. It's undeniably stirring stuff.

Director: Clint Eastwood
Cast: Bradley Cooper, Sienna Miller
Certificate: 15

American Sniper opens in the middle of a war zone, as Navy SEAL sniper Chris Kyle is faced with the decision to shoot a child or not. It's a sight that is familiar to anyone who has seen the trailer - a moment so striking and tense that Clint Eastwood even dares to repeat it again later in the film.

For Kyle, though, that's the essence of his existence: making the call on whether to pull the trigger or not. He lives for it - rather than living for his wife and kids. As a result, she weeps at home for her lost husband, while the men in Islamabad glorify him as a legend. You can see why: with 255 kills to his name, Kyle's accurate eye keeps countless Americans alive in Iraq. "The most lethal sniper in US military history", declares the trailer.

But Eastwood's account of Kyle's service isn't the pro-military movie it might be mistaken for: starting with his Bible-reading childhood and lessons in bullying from his dad, Jason Hall's script examines what makes a man want to become a killing machine. Bradley Cooper is unrecognisable as Chris, beefing up to play the cowboy with a mostly silent performance; compared to his fast-talking roles in American Hustle and The A-Team, Bradley becomes increasingly withdrawn, turning what starts out as a curious drama into a pained account of post-traumatic stress disorder.

Sienna Miller is equally superb as Taya, moving from flirtatious early romance to frustrated marriage. The pair work well together, selling their relationship over detached phone calls on Kyle's satellite phone, as he prepares to take another bad guy out. Eastwood presents the action with an immediacy that recalls Kathryn Bigelow's award-winning work with Jeremy Renner, keeping you on the edge of your seat without any gung-ho flourishes. It's an approach that gives events a deceptively complex air; Kyle may have the simplistic view of Iraqis as "savages", spurred on to ship out after seeing attacks on TV, but the movie is far from patriotic, paying as much, if not more, attention to psychological fallout as the movie's flag-waving finale.

The introduction of an enemy sniper may seem straight of an action movie playbook, but even his presence only serves to ramp up the tension - this is war as adrenaline, giving the audience a hit of the rush missing when Kyle's at home. Is he addicted the thrill? Haunted by those he couldn't save? Cooper's conflicted face is as sympathetic as it is sad. Think The Hurt Locker 2, in a good way.

Cooper spends his time with Miller and their baby staring at footage of kills on the telly, almost re-processing his experiences as video game-like entertainment. It's here that the bullets really fly. While Taya tends a kids' birthday party, Kyle perches, on edge, surveying the scene for potential risk; that opening scene stuck on a loop like a movie trailer he can't turn off.

Director: Bennett Miller
Cast: Steve Carell, Channing Tatum, Mark Ruffalo
Certificate: 15

Ornithologist, philatelist, philanthropist. That's how John du Pont asks Mark Schultz to describe him in an awards speech. Taking the wrestler under his multi-million dollar wing, he invites Schultz into his world of status and superiority, one where such titles matter.

Ornithologist, philatelist, philanthropist. Schultz chews up the words as he echoes them, stumbling over the syllables. John repeats the phrase, a teacher drilling it into his pupil. The temptation is to laugh at such a bizarre class divide, but Foxcatcher stops you before you can get there, instead leaving you with a creeping sense of unease about its true story.

The majority of that comes from Steve Carell. The word "unrecognisable" may have become an all too recognisable description for his role, but the comedian delivers everything unnervingly straight. Setting his sights on winning the 1988 Olympic games in Seoul, Carell's John stares at his seduced underling over his giant, hooked nose; part Roman Abramovich, part Dracula.

Mark Ruffalo and Channing Tatum's champion siblings are equally mesmerising. Tatum is brutal as the everyday contender, beating himself up over losses and failures, while he tries to meet the approval of his new benefactor. He isn't just a lunkhead; he lunks. He lunks about the ring. He lunks his head into a mirror. He lunks around on the sprawling du Pont estate, standing out against the opulence around him. Ruffalo, meanwhile, is generous to a fault, playing his kind-hearted brother with an understated air that gives Channing a chance to shine.

We first see them together in a practice session, grappling each other silently on the floor. Even without them saying a word, we learn everything we need to about their relationship, from David's loyalty to Mark's frustration at being in his older brother's shadow. They couldn't be more different to Carell's investor. Where they move fluidly together, he is awkward; where they come from average homes, he fills his halls with trophies and stuffed animals; where they have each other, he has his disapproving mother (a brilliantly cold Vanessa Redgrave).

The shifting dynamics of this unnatural trio becomes fascinating to observe - an examination of sports becoming corrupted by wealth and status. "You're a friend," he tells Mark, after he calls him Mr. du Pont. "My friends call me Eagle." Then he recruits David for a documentary about himself, ordering him to talk about how influential he is as a mentor.

The less things are played for humour, the scarier they become. How much of du Pont's actions are driven simply by a desire to have the brothers' intimacy, be it physical or emotional? Writers E. Max Frye and Dan Futterman hint at several factors behind his and Mark's bond, while Schultz seems equally keen to have a father figure, but there are no answers explicitly offered - even as things end in an unexpected final act.

Throughout, director Bennett Miller captures everything with a detached air reminiscent of his earlier Capote, letting events unfold slowly with no signposts or psychological insight. That clinical approach will leave many feeling uninvolved, but the lack of engagement only adds to the troubling nature of du Pont's behavour; weeks later, you'll still be haunted by it, puzzling over what happened. Ornithologist, philatelist, philanthropist.