I still use my XBMC running on my Xbox regularly and love. I haven't completely gone to the dark side like Omar with the 360. I tried a beta version (or pre-beta correct me if I'm wrong dialup) and it crashed all the time. That kind of put a damper on things. If I were to build a HTPC, I'd definitely be looking to put Atlantis on it. All I would need is a stable version of XBMC that can play HD, and I'm sold.