SSBB, GTA IV, MGS4, LBP, GeoW2. That's it, and probably no other game has any chance (well, mostly). And I hope I'm not forgetting anything (no, I haven't forgotten Fable 2, Resistance 2, Mirror's Edge).
EDIT: And this is the wrong section for this thread; this should be in general gaming or something. As GotY awards are about all platforms, this needs to be in another section.