MacMall has a sale on HP MicroServer for $200 (usually $350):
http://www.macmall.com/p/6913587?dpno=8887013&source=zwb12166
Makes for a nice and small server box (media, storage, whatevs) if you don't want to build your own. A nice writeup about the box is here:
http://www.silentpcreview.com/article1193-page1.html
