I'm Buying a.... 'Drum roll'.. PS2!

[Heavenly_King]

God hand, although you can buy it from the PSNstore on your PS3
Devil May Cry, unless you want the HD collection
Final Fantasy XII, and Final Fantasy X
Onimusha 1,2,3 and Dawn of Dreams
Legacy of Kain: Defiance
Legacy of Kain: Soul Reaver 2
MGS2 and MGS3 (or on PS3 HD COLLECTION)
Tekken 5
Guilty Gear XX
Marvel Vs Capcom 2 (unless you have the PSN version)
Capcom Vs. SNK 2
Tenchu 3
Xenosaga Episode I, II, III
SHADOW HEARTS 2 (AMAZING RPG), if you want to understand more the story I would recommend buying also Shadow hearts 1, but the graphics are horrible lol XD.
Shadow Hearts: From the New World (Not related to the 2 games above, but good)
Genji 1

I know there are more good games, but I cant remember lol. I am gonna check my 200+ PS2 games and see which are the best of the best, and post them.