The Uncharted series and Final Fantasy XIII would make good movies. I hear there's an Uncharted movie that's been kicking around for a couple years now. Be interesting if that ever happens.
Trigun It's old but the story is awesome. It's a shame it was so short because once you get past the silly episodes it's heartwrenching. I'm not much of a fan of the relationships they pushed though. I wish they would make another series like they did with Fullmetal Alchemist.