I like the Donkey Kong World (I think that's what it was) on N64, you had to have the red expansion pack thing to play it, cause it was such a beastly game.
Oh man, good times with that game!!
I remember sitting there for 4 hours once, playing, so much fun!!!
I like Doom3 because you can just shoot and not think. FarCry was good for a few days until I got to those strange creatures - then it became tactical and I gave up.