I'll do what I can. Based on what I've played.
Best Action/ Adventure Games - Uncharted
Best Fighting Games - Tekken 6
Best First Person Shooting Games - Fallout 3
Best Platforming Games - Mario Galaxy
Best Sports Games - Fifa 12
Best RPG Games - Dragon Age Origins
Best Third Person Shooters - Mass Effect 2
Overall Best Games
Wipeout HD
Stardust HD
Skyrim
Hmm, pie.