I'm running Anderdroid's AOSPish 1.0 2.2 and it's awesome. He came out with a 1.1 version but I've been so happy with 1.0 and it's battery life and performance that I'm afraid to upgrade :D
I can honestly say as long as you're in classic wow, it's pretty playable. As you go thru the content, Burning Crusade gets worse performance wise, and Lich King gets you some pretty low frame rates. Depending on what you are doing tho, I did level my DK from 71-72 exclusively on my Lenovo...
what i do is just hook the xbox up to my sound card's line in jack. this gives me control of the sound thru windows etc and most of the time i'm not using my computer if i'm playing the 360 on my monitor.