Well, I guess I was looking more along the lines of PS2 exclusives. Hmmm.
I do have X-men Legends for Xbox (forgot that one earlier). That one does play pretty well. How is LOTR: Third Age?
LOTR: Third Age is an awesome RPG....it's very linear, but the gameplay makes up for it...great music, graphics, spells, items, storyline, and lots of level ups
Best of all, it can be played co-op with another player...that's how I played through it and it's what made the game much more appealing to me...there's not many good multiplayer RPGs out there
Speaking of multiplayer RPGs..have you ever tried Advanced Dungeons & Dragons: Heroes for Xbox? It's a 4-player RPG, pretty good one as well