Anything with the Tri-Ace logo on it is good :p. Tri-ace is behind the Star Ocean series and Valkyrie Profile, among others. Tri-Ace games are released through Square-Enix, by the way.
You could also try Tales of Symphonia, if you've got a Gamecube. Don't know if the PS2 version ever got to the US.
Xenogears is good too, and you should definitely play Chrono Trigger.