Krunker.com has taken his Mac Mini and turned it into a working VMC Home Theater PC. Not necessarily the cheapest or most practical project, but it does prove that the Mac Mini can make a very capable Windows box.
If it didn't cost so much, the Mac Mini would make a great extender for SageTV or Beyond TV. Then again, I would guess that most Apple folks would be offended by even the thought of using Windows on an Apple device...
