Hmm. I think I'll put genres as well. Just one for each this time.
Action Adventure- Metal Gear Solid 4: Guns of the Patriots
Shooter- Gears of War 2
--FPS- Resistance 2
--TPS- Gears of War 2
RPG- Fallout 3
Platformer- Little Big Planet
Strategy- Civilization Revolution
--RTS- Sins of a Solar Empire
--Turn Based- Civilization Revolution
Fighting- Super Smash Brothers Brawl
Racing- Burnout Paradise
Sports- NHL 09
MMO- Warhammer Online: Age of Reckoning (were there any other MMOs this year?)