Doom 3, I didnt set my expectations high though, i sort of pretended it wasn't squeal to the best FPS of all time and jsut played it as an average action horror fps and enjoyed it allot.
Turok (most current generation) It was pure pure pure shit. the story line and characters from the normal franchise was removed, the voice actors sounded embarrassed to be there, game play sucked ass, and you could kill basically anything with one stab. That begin said it had the best damn dinosaurs and dinosaur movements i've ever seen in a game.
Quake 4 - Supremely under rated. you get to see your limbs sawed off and robotic ones replace them. this game rocks!
Evil Dead - Fist full of boomstick
This game deserves an 11 out of 10 just for having Bruce Campbell's real voice and hours of bloodstained chainsaw boomsitck fun.