Any PS2 gems I should be aware of?

[9Chiba]

so... personas, team ico games, dark cloud, katamari, MGS2 and 3, Tales of Abyss... 4 times, great ill check them out.

maybe i shouldve started with what i have played:

okami (both versions)
FFX
Xenosaga series
Shadow Hearts Series
KH series
Fatal Frame Series