Recommend PS2 games

Persona 4, .hack//G.U. Vol 1, 2 and 3, Need for Speed games especially persona and .hack

Other guys already said most of what I wanted to say, so , I'll add to the ever growing list and say Metal Saga, Atelier Iris 1,2,3 something and Ar Tonelico series as well.

Mana Khemia Rpg too.

Suikoden V

and Growlansers for now.

Seconded, really recommend you the trilogy of Xenosaga.
Also: Tales of the Abyss, Fate/Unlimited Codes, Melty Blood Actress Again.

TRAPT [kill people with traps]

Guilty Gear Accent Core Plus [no need to explain, except that 'Plus' has the extra soundtrack disc]

Grimgrimore [think starcraft, but with magic]

Hmm,. think I'll start with the Devil May Cry games. Is the second one worth playing, I've heard it sucks compared to the first and third? Or should I play it just to get the entire story anyway? =3

dmc 2 is terrible, in story there was little to no story. from what i remember the bosses didnt even talk to you like in the others. but you should play it just to play it, it is the last leg of the whole story

Way of the Samurai, I love this game, it's probably one of my favorites. It may not look as good as other PS2 games, but if you dig samurai games, or haven't played any, definitely play this one.

Way of the Samurai 2, it looks great, plays good, story is great but like me, most people like WOTS1 better. It's fun regardless.

SkyGunner, amazingly fun flight sim. Well it's not really a sim, it's an action shooter. Looks great too.

if you compare metal gear 2 to mg3, then yes mg2 is crap.
try
atelier iris
Valkyrie profile 2
fatal frame series

Yeah, if you can get past the repetitive enemies, easy as hell bosses and horrible environment. Story sucked and there's no point playing the game for it. I wouldn't be surprise if Capcom ignores that story of that game completely.

I've realized that horror games is nothing for me -_- Call me a wuzz, but I hate playing those kinds of games by myself, I need someone to scream like a girl with me to enjoy it.

SHADOW OF THE COLOSSUS AND KATAMARI DAMACY

Kingdom Hearts 1&2.

^this as well, fun game.

A bit on the short side though, but high replayability.

Ace Combat 5 and Ace Combat Zero.

-_- Why do I feel like I'm playing Ganon's Castle in Zelda: OoT when I run up the building at the beginning in DMC3? Oh, maybe cuz it's almost exactly the same -_-

you have to get God Hand, Chaos Legion, Onimusha series, and Sly series...
and the games posted before this
oh yeah. and those Ar Tolenico games or at least thats what i think they are called. Also get Grandia 2 and Silpheed