areseris on 01 September 2009
You should play them in this order (IMO):
1. Lost Odyssey
2. Tales of Vesperia
3. Star Ocean: The Last Hope
4. The Last Remnant (if you can install on HDD)
5. Infinite Undiscovery
6. Blue Dragon
7. Eternal Sonata
8. Ninety-Nine Nights (it's not jRPG, but since you asked, i added it to the list)
9. Phantasy Star Universe
Haven't played Enchanted Arms or Magna Carta II yet. EA i'm not excited about, but I really want to play MCII.
