[quote name='icebeast']Rachet & Clank series, Jak series, and Persona and Shin Megami Tensei series are all really good for the PS2. Dragon Quest VIII is fairly awesome as well.[/QUOTE]
Yeah, the SMT games are excellent. Persona 4 kicks the shit out of the P3 Portable, f'sho. The Digital Devil Saga games are great, too. Nocturne is like... the pinnacle of RPGs.
As far as more standard stuff goes, I do love me some FFX and FFXII. And yeah, DraQue 8 was excellent. Only game in the series that's held my attention. RPGs on the PS3 are garbage, so the PS2 should be a revelation for you.
Jak and the Ratchet games are overrated garbage. They're polished, but not exciting in the least. The only platformer that immediately comes to mind for me is Klonoa 2.
Fighters... there is so much. As far as domestic stuff goes, King of Fighters XI is amazing (way better than XII ever was), and Guilty Gear XX Accent Core Plus is mint as shit. F'sho f'sho!
Action Adventure... well, DMC3 is the best in the series by a mile, the Onimusha games are still awesome (with the exception of Dawn of Dreams, which is decidedly unawesome), the MGS games are practically mandatory. Zone of the Enders 2 is rad as

, but kinda pricey, I think.
So yeah, there's a lot of shit that could be genuinely considered must-have material. I miss last gen
