Nier (PS3)--great story and characters, interesting world, decent action combat
Final Fantasy XII (PS2)--huge world, great cast, story focused on power and politics, nice environments and art design
Neither of these is your bog-standard JRPG, but they're both great quirky versions of the genre. If Persona 4 is more your style, though, you might prefer other Atlus games in the MT/SMT family or even Catherine, which is kind of a puzzler with a JRPG vibe.
Final Fantasy XII (PS2)--huge world, great cast, story focused on power and politics, nice environments and art design
Neither of these is your bog-standard JRPG, but they're both great quirky versions of the genre. If Persona 4 is more your style, though, you might prefer other Atlus games in the MT/SMT family or even Catherine, which is kind of a puzzler with a JRPG vibe.