Shining Force 3 is great fun. A real shame that Camelot abandoned Sega after that (although honestly I didn't like the Golden Sun games). Shining the Holy Ark is a fabulous dungeon crawler ruined by persistent slowdown. There's no rhyme or reason to the slowdown either; it often happens when there's only one enemy on the screen, yet sometimes when the screen is packed with enemies there is no slowdown at all. Better than 90% of the time though the battles chug. When the battles are running at full speed it's maddening to see what the game
could have been.
Radiant Silvergun and Panzer Dragoon Saga are both overrated. To the poster who says that people claimed RS is overrated probably haven't played it: the reverse is also true, I think a lot of the accolades both of these games get are from people who have never played them

. Not saying they're not good games, but they're also not the greatest shooter and greatest RPG ever IMO.
Have you ever played any of the Sakura Taisen games djtiesto? At least one of the first three is worth trying (although if you're only going to play one I'd play the third one on DC). The Sakura Taisen themed Columns game is good too.
If I remember right, the Princess Crown walkthrough was written by Drinky Crow (if Drinky Crow is who I think he is, sorry this board and the posters have been through so many iterations I don't know who is who anymore

.
Some other Saturn RPGs I have played:
Riglord Saga 2 - strat RPG sequel to Mystaria/Blazing Heroes. Much better than the first game, and fairly good looking to boot.
Terra Phantastica - another very pretty strat RPG
Samurai Spirits RPG - uhm, not sure what to say about this one. Worthwhile if you're an SNK fan I guess
PuyoPuyo RPG - this is a nice action RPG with PuyoPuyo characters
Devil Summoner Soul Hackers - I never got very far in this one. A damn shame the first game never made it over (Atlus was supposedly working on translating it)
Ronde - another strategy RPG (detecting a trend here? yes, I like strat RPGs). Not very good at all.
Arcana Strikes - I originally got this because I thought it was related to the SNES RPG. Not so, this is a card game/RPG. Nice graphics and the language barrier is very low.
Shadows of the Tusk - not an RPG, but a very addictive strategy game. You fight with a deck of cards of characters, moving your pieces around a 25-square grid somewhat like Archon (but without the arcade combat of Archon).
Quo Vadis - strategy RPG set in space. There is a sequel which I have never played. Mainly notable (for me anyway) due to the Mikimoto art.
Blue Breaker - port of a PC-FX game. Part RPG part simulation game. Also extraordinarily difficult (not helped by my poor Japanese).
Wachenroder - you guessed it, another strategy RPG! Sort of a steampunk setting, which is cool.
It's funny this topic appeared, I have been thinking lately how much I miss the 32-bit era. That was probably my favorite time for console RPGs (on both PSX and Saturn). You still had plenty of traditional style 2D RPGs plus lots of groundbreaking 3D titles. Just an awesome, exciting time to be a console RPG fan. The current generation has just left me cold (outside of KOTOR), there isn't a single JRPG on PS2 yet that has really grabbed me the way the JRPGs from the 32-bit era did (and before people start jumping on me I still have quite a backlog of PS2 RPGs that I am playing through).