I just went to GameStop

[Azure-Tranquility]

which reminds me
I need to get the whole persona/.hack/disgaea series
I've never played any of them
but I especially want .hack

Disgaea is awesome, and has a long-lasting value.(IMO but it seems to be the mainstream opinion too)

.Hack is great for one play-through. After that the gameplay loses its charm... and you begin to ponder: "I'm playing a game that's about a MMO? Not an actual MMO? Wut"

.Hack GU however... has more replay value. It's also QUITE different from the regular .Hack games.

All I can say about Persona is that most of the games in that series are EXPENSIVE, but I have heard good things about it.