I'll second Mad Max as an awesome property begging to be made into a game. While playing through Fallout 3 I kept thinking how amazing it would be if this approach were done for the Max films. So here's my wish list for movie-based games (some are a bit tongue-in-cheek as I'm a connoisseur of film cheese):

*Doomsday (how can this NOT be the greatest game ever???)
*Conan the Barbarian (forget that crappy hack n' slash from a few years back)
*Tremors (virtual Fred Ward... HELL YEAH!!!)
*The Sword and the Sorcerer (Tri-sword fury!)
*Event Horizon (although Dead Space kinda took this idea and ran with it)
*Nightwatch
*Casshern (cutting robots in half with your bare hands in slo-mo = BADASS!)
*Appleseed
*Flash Gordon (but ONLY if they get the rights to the Queen music)
*Equilibrium
*Escape From New York (why this hasn't been done yet is beyond me)
*Beastmaster
*Cube (going from room to room, trying to avoid death traps, should be freaky and fun)
*Time Bandits (or for that matter, any game where you get to fight a villainous David Warner)

Personally, I'm a fan of classic movies being made into video games, as long as they're done well, with a healthy dose of reverence for the source material, like The Thing or The Warriors.