Yeah. Vista x64 SP1 with the TV pack. I've got the beta drivers for the HVR-2250 so I can tune QAM channels. Sadly, Comcast offers all of about 5 unencrypted QAM channels.

I really like the whole 8GB of RAM thing. It has smoothed out the UI and allowed for a much more responsive feel. Between that and the Quad-Core, I'm very happy with the upgrade. The old system (X2 3800 and 2GB of RAM) positively choked on some of the HD content.