We all remember Leonardo Da Vinci and the Soldiers of Forever - that mad idea for a movie, which sees the legendary artist and inventor as a member of a secret society who fight demons and stuff. Well, now the concept (which is pitched as a cross between National Treasure and Raiders of the Lost Ark) has a writer: Marc Guggenheim.

Guggenheim, whose name alone suggests a supremely gifted nutter, will also be working on Thieves of Baghdad - a story bringing together Sinbad, Ali Baba and other Arabian Nights folk together to pull of a massive heist. While that one sounds derivative, it's nowhere near as insane as Leonardo Da Vinci and the Soldiers of Forever. But hey, a writer who's worked on FlashForward, Green Lantern, and a bunch of TV shows and comic books in the past, Marc Guggenheim might just be the one man batshit crazy enough to pull these ideas off.