@ lurking: I happen to have Digital Devil Saga 1, go figure!
@ oldmayleroy: You don't need to play previous Persona games to enjoy Persona 3, though I haven't played it myself.
Honorable mentions:
Dark Cloud 2. I think I actually have seen Monica hentai. "Murderer? Now that hurts."
Tales of Symphonia. "Feel the pain, of those inferior beings, as you burn in hell!"
Golden Sun 1 and 2. *massive dialog*
Super Mario RPG. Click
here. Seriously, click the link.
Grandia I and II. #1: better storyline, longer, terribly horrific voice acting. #2: Nice pacing, improved combat system, Explosion spell, Meteor spell. "Purple Lightning!" Need #3.
There's more, but I wanted to limit the runners-up to 5 games/series.
Top 10:
10. Tales of Phantasia (SNES). Thank you DeJap. *Insert boat scene here*
9. .hack//G.U. "SKKEEEEEEEEIIIIIIIIITTTTTTTTHHHHHHHH!!!!!!"
8. Star Ocean 3. Have yet to play #2. "Sidekick! Sidekick! How do you like that! Sidekick!"
7. Digital Devil Saga 1. Need number 2. "Rend, slaughter, devour your enemies!"
6. Disgaea. Go! Go! Prism Rangers, dood! "How dare you call me Mid-Boss!"
5. Atelier Iris 2. Would have a higher rank, but it doesn't have shopkeeper stories nor does it have Popo's Fourth Wall Lecture Series. "Good job ... er, umm ... Klein."
4. Xenosaga Episode I. Have the 3rd, and now I just need to play it. I <3 KOS-MOS though. (I have an affinity towards females with long light blue hair.) "Activating Hilbert Effect."
3. Final Fantasy VII. Need I say anything?
2. Odin Sphere. I cried TWICE during this game. "I'll never allow anyone to treat you like an object. Never."
1. Xenogears. The definitive RPG experience.
Rule 54.
Edit: Since when was ZoE an RPG?! It's more like a flying version of Virtual-On. ... Oh wait, that's right. The GBA ZoE was an RPG ...