1) MGS4
2) UC2
3) GoW3
4) GTA IV
5) SSF IV
6) Killzone 2
7) UC DF
8) inFamous
9) DMC IV
10) AC 1

I still have some games I haven't played or forgot, Red Dead Redemption will likely go close to GTA IV, depends if I keep losing poker or not :).

That I've played.
1.Bioshock
2.Oblivion
3.Call of Duty World at War
4.Killzone 2
5.Resistance fall of man
6.Bioshock 2
7.Call of Duty 4 Modern Warfare
8.Fallout 3
9.Infamous
10.Burnout Paradise
11.Far Cry 2(only added because it is tied for #10)

Top 4:-

1- The Elder Scrolls IV: Oblivion
2- Uncharted 2: Among Thieves
3- LittleBigPlanet
4- Call of Duty 4: Modern Warfare

1.Metal Gear Solid 4
2.Demon's Souls
3.Fallout 3
4.Bioshock
5.Dead Space
6.Heavy Rain
7.Half Life 2: The Orange Box
8.Resistance 2
9.Call Of Duty 4: Modern Warfare
10.Killzone 2

1. MGS4
2. Dragon Age origins
3. Uncharted 2
4. Demon's Souls
5. Madden 10 ( so sue me, it was my first Madden game ever and I have played that game more than any other PS3 game..)
6. Assassin's Creed 2
7. Pixel Junk Eden
8. DMC4
9. Re5
10. KZ3

10: Uncharted DF
9: Little Big Planet
8: Resistance 2
7: Mod Nation Racers
6: infamous
5: Demons Souls
4: Killzone 2
3: Uncharted 2
2: MGS4
1: God OF War 3!

Not Exclusive

10: GTAIV+ballad of Gay Tony&The Lost And Damned
9: FF13
8: COD4
7:CODWAW
6: Bio-shock
5: Bio-shock 2
4: MW2
3: TES Oblivion
2: Fallout 3!
1: Red Dead Redemption!!

1. Uncharted: Drakes Fortune
2. Dead Space
3. Heavy Rain
4. Demon's Souls
5. Socom Confrontation
6. Uncharted 2
7. WarHawk
8. Metal Gear Solid 4
9. InFamous
10. 3D Dot Game Heroes

1) Uncharted 2:Among Thieves
2) Metal Gear Solid 4:Guns of the Patriots
3) Call of Duty 4: Modern Warfare
4) Dead Space
5) LittleBIGPLanet
6) Uncharted: Drakes Fortune
7) Red Dead Redemption
8) Heavy Rain
9) God of War III
10) Batman:Arkham Asylum

Buy every game on this list and you can die a happy man.

1. Demon's Souls
2. Heavy Rain
3. MGS4
4. God of War 3
5. Uncharted 2
6. Yakuza 3
7. inFamous
8. Killzone 2
9. Warhawk
10. LBP