I am a universal gamer; the only games I don't play are bad games. That said, I do prefer racing games, monster-raising games, RPGs as a whole, and platformers. If you recommend me a game and aren't a fanboy about it, chances are I will give it a try.
My favourite game is Metal Gear Solid 3. My favourite game series is Phantasy Star.
I am saving up for a PS3, primarily for Metal Gear Solid 4, Little Big Planet, and Disgaea 3