Guns, big cities, lots of explosions, preferably a smoking hero with a lot of scars, a believable enemy, funny jokes, not too many weird faces (I don't want Jim Carrey to star in a porn movie, that'd be a big turn off), scary monsters, ancient ruins, and some aliens might be fun (I'm thinking of Xenomorphs or Klingons).
I'm probably forgetting something but it's probably not important anyway...
Oh yeah, girls.