-Grand Theft Auto III, Vice City, San Andreas
-Kingdom Hearts 1,2
-Armored Core 2
-Final Fantasy X
-Ratchet and Clank
-Jak 2
-Jak 3
-Breath of Fire Dragon Quarter
-Grand Turismo 4
-Sly Cooper
-Battlefront 1-2
-Tales of Symphonia/Legendia
My favorite games were the two God of War games, Resident Evil 4 (O.M.G.), Jax & Daxter, Jax II, .hack//, and FFXII (I had a really bad addiction to that game).
I still have mine and amazed it works, though I packed it away to make room for the PS3. Sadly, I find myself buying the HD ports for games like God of War and Kingdom Hearts for it, all while the PS2 is chilling in the closet with the original Xbox and the Super Nintendo.
Anyhow, when I heard Resident Evil 4, I wasn't sure that it is a good game. Then when I tried it it was simply AWESOME!!! :D And Jak and Dexter III is also super cool. :D