Lets see..
Battlefield: Bad Company 2This game set the standard for FPS's in my mind. Destruction 2.0. The leveling. The vehicles. The tactics. I just fell in love with every ounce of it. :wub:
Fallout 3Although I was skeptical on the whole idea of a post-apocalyptic RPG, I'm glad it caught my eye. Without it, four hundred hours of my life might have actually been spent on something worthwhile.
Uncharted 1 & 2. In terms of story, not many shooters can come close to matching Naughty Dog's precious jewel. It was a wonderful, action pack thrill ride that I'm very glad to have experienced.
Assassins Creed 2 & Brotherhood A badass story, intriguing characters, amazing assassinations and free-roam, plus a surprisingly well-done multiplayer experience.
Mass Effect 2 Though I have never played the original, the cloud that hung over my head as I played through every segment of Mass Effect just kept me hooked all the way through. Knowing that every choice I made could have dire effects in the future made me re-think every choice, right before I made it. A spectacular game from beginning to end.
Heavy RainThe Greatest (and only) Interactive Drama of this gaming generation. Its worth picking up a PS3 just to play through this game. Knowing that any one of your characters could die at any time allowed for a gaming high I have yet to experienced with any other game to this date. A truly magnificent title.
Went a little overboard, huh?