wii sports: first time since the introduction of the 3d gaming of ps1/n64 that i actually felt wow'd by a game.
portal: such an original game design and the closest thing to my vision of the "ideal" game i've ever played.
zack and wiki: okay - not really ground breaking but it revived for me one of my long forgotten favorite genres.
SMG: i can't begin to express how much fun i had and time i spent jumping a full orbit around the mushroom space ships. soo much fun is packed in this game.
rock band: just got my hands on it this weekend when i was visiting michigan. simply amazing.