Katamari Damacy is one of my picks, too. Did you ever think you'd describe a game to others where the goal is "to roll stuff up"? I never did, and I never thought I would enjoy something like that.Real Gonzo said:Tetris and Katamari damacy.
I was wrong on both counts!
I'd also add to that Portal for completely up-ending my view of in-game perspective and physics!