Oblivion
Skyrim
Fallout 3
Call of Duty: teh multyplayer of the last 3 games
Battlefield: last 2 games
Dungeon Keeper 2
Black & White 2
gta 4
Total War Shogun 2, Empire and Napoleon
Warcraft 3 single and multyplayer
Starcraft 2 only single
Supreme Commander 2
Assasins Creed 2
Crysis
Heroes of Might and Magic 3 & 5

In no particular order:

Fallout 3
Skyrim
Battlefield 3
Oblivion
Halo Wars
GTA IV
Red Dead Redemption

I'm not the only one I'm surprised.

Just off the top of my head.

Red Dead Redemption
GTA IV
GTA: Vice City
Skyrim
Fallout: New Vegas
Deus Ex: Human Revolution
Killzone 2
Assassin's Creed 2

ha ha you can have my copy for ￡100? or you can have 1, 2 and 3 bundle deal for ￡200?
and havent any of you played dx1 or ss2? damn y'all missing out.

GTA III / VC / SA / IV
TES II / V
Fallout New Vegas
Alpha Centauri
Forza 3
Assassins Creed Brotherhood
Total War: Shogun 2
Saints Row The Third
Quake 2
Halo Reach
COD Black OPs (for the zombies mode only though)
Alan Wake
Legend of Zelda Ocarina of Time / Skyward Sword

I think I should just stop now lol.

Dead space
Halo
Deus ex human revolution
crysis
mass effect1 and 2
fable the lost chapters
starcraft/brood wars
red alert/yuri,s revenge
dragon age/awakenings
witcher1 and 2
fallout 3 and tactics, havent played 1 or 2 yet.