PS3 retail
Valkyria chronicles (RPG)
Killzone 2-3 (FPS)
little big planet 1-2 (if you like creating games or plattforming levels)
mod nation racers (if you like building/creating cars and race tracks)
demon souls (RPG)
Uncharted 1-2 (action)
God of War 3
PSN
shank
there are more but it seems as if most will repeat what i say so.