I've tried running Star Wars d20 twice now and both times it's fallen flat. The classes just aren't diverse enough, and should really have been broken down into two categories: Jedi and Nonjedi.
I bought the Wheel of Time RPG hoping to divest the rules from the setting and use the rules for a homebrew, but that turned out to be more trouble than it was worth. The ruleset is so ingrained in that terrible book setting that one would have to retype everything just to replace the WOT-specific words. Damn shame; the magic system looked really cool.
Nope, it's good old D&D for us. I'm not really interested in Dragonstar or any of the other non-D&D d20 stuff that's come out, although I'm happy to see it because it's indicative of a healthy community!