Too many JRPG's I've played and loved to just limit it to 5, but here are the ones I can remember off top or had the most fun with in no particular order.
1) Brave Fencer Musashi 1 -
2) Final Fantasy 8
3) SaGa Frontier 1 (I mean the whole series is piff if you can hack it, but 1 is the first that just had me
music, game play, everything)
4)FF Tactics -
5) Star Ocean 2
Honrable mentions - Tactics Ogre (Played FF first and hold more memories with that, but this game still awesome), Xenogears, Suikoden 1-3, Breath of Fire 3,4, Chrono Trigger, La Pucellie tactics, Dark Cloud, Front Mission 3, Super Mario Rpg, SaGa Frontier 2 (fukk..the entire series is piff!), Alundra, the Disgea series...shyt..I'll stop.