I can't say wich is my best game but I can name my favourites.
MGS
MGS 2
MGS 3
GTA VC
GTA 3
GTA SA
Fahrenheit
COD 4
Resident Evil 4
Kingdom Hearts
Freedom Fighters
The Elder Scrolls: Oblivion
Ratchet and Clank
Ratchet and Clank: Future Tools of destruction
Canis Canen Edit( Bully )
Second Sight
Can't remember more games.