I have about 60 playstation 2 games. But my best ones are:-

Final Fantasy 10, 10-2 (but i have all of the PSone FF's too.)
Burnout 3 and Revenge
Tomb Raider's
Resi Evils
Disgaea, Phantom Brave, La Pucelle: Tactics, Makia Kingdom
Silent Hill's
GTA's
Time Splitters