Call of Duty 2, Gears of War, Lost Planet, Chromehounds (best if you have online), Forza 2, PGR3, Crackdown, Overlord, G.R.A.W, Rainbow Six

Games Comming out

Halo 3, Mass Effect, Assassins Creed, Bioshock, Call of Duty 4, Naruto: Rise of a Ninja (if you like anime but the game looks promising otherwise), Devil May Cry 4, PGR 4, Skate, Stranglehold, Blue Dragon (maybe)