The first two Fallout games would make better movies than Fallout 3 would. There was something more inherently cinematic (in the screenplay-craft department, at least) about the arc of those games' plots.
Football Manager: The Movie, in which a Sunday league player takes over a Blue Square North team and leads them to the Premiership, where on the last day of the season they play Manchester United with the title on the line...and win. Come to think of it, that might make a better Dream Team type running series in which the scrappy band of footballers work their way up through the ranks over the course of a few seasons.
Tropico: Legend of El Presidente.
I Wanna Be The Guy would make an above-average cartoon film if the game's difficulty were played up with Tex Avery-style cartoon mayhem. I'm thinking every life wasted in the game could be an expendable character (sort of a "they killed Kenny" running gag.)
RPGs would, in general, make lousy games because fetch quests don't translate well to the screen (Fallout aside, and that would be less about the games and more about, say, the character's adventures in the wasteland with the GECK as a convenient MacGuffin. I'm sure Reno wouldn't mind the influx of money if they were to shoot the Fallout 2-inspired scenes in town...this place looks enough like a nuclear bomb hit it, at least...or maybe that's just the super mutants and ghouls homeless people and meth heads.)