Red Dead Redemption God of War III Call of Duty: Modern Warfare 2 3D Dot Game Heroes LittleBigPlanet: Game of the Year Edition Final Fantasy XIII Grand Theft Auto: Episodes from Liberty City Assassin's Creed II Super Street Fighter IV and 2010 FIFA World Cup are my favourite 10 PS3 games..
I haven't played as many PS3 games as most of you guys so my options are pretty limited. I wouldn't bother with MW2, get MAG instead, it's a much better game in every respect. I did play Stranglehold and Bioshock on the Xbox360, but also on the PS3 too, therefore making them eligible for my list.
1. Call of Duty World at War 2. Call of Duty 4 Modern Warfare 3. Uncharted Drakes Fortune 4. Resistance Fall of Man 5. Resistance 2 6. Ratchet and Clank Future Tools of Destruction 7. Burnout Paradise 8. UFC 2009 Undisputed 9. inFamous