I was over at linux.com, and there was an article about building your own Linux Home Media Center. It makes me realize that there is a strong perception that MythTV is hard. And while it can be difficult/challenging, and yes… hard. It can also be used in a simple way as just a Media Center with no recording (no backend capabilities). I would strongly suggest anybody considering rolling their own media center give the MythTV route a shot first, because it’s such a short jump to wanting a full-fledged PVR, and MythTV is up to the task.
Good Luck folks