I have played and immensely enjoyed Baldur's Gate 2.
Oh! I've actually really been wanting to play The Witcher 2 - it looked like something I would really enjoy. My laptop though is a piece, so I'm excited to hear it's coming out for 360. And I am currently saving up for Skyrim, I'm just in college and poor so I was looking more for older games.
I didn't know Jade Empire was on XBLA! I'll definitely look into that.
Dues Ex II looks interesting, and I quite like shooter providing they have rpg elements, but since it's so new I can't really afford it at the moment. I'll have to wait for a price drop.
A lot of my friends have been trying to goad me into minecraft, but I'm not sure if it's really my thing... It's also an alarmingly large time sink for some of them.
Persona 4 also looks like something I would enjoy, as does Planetscape Torment.
Note: I currently only have an Xbox 360, as my ex broke my ps2 and stole my gamecube... (I was also in the middle of KotOr, of which he had two copies, but he refused to lend me one of them.) Also my computer is a bootcamped mac... so it's not exactly prime for gaming besides emulating older games or playing light indie games.
Thanks for all the suggestions! I had just made my sixth character in Dragon Age: Origins when realized I really needed something new.