Hey guys, just letting anyone looking for a pc alternative to check out SheevaPlug
http://www.plugcomputer.org I have been looking at this for a while and eventually will get one (too many toys to buy!) . It runs linux and has a USB port, so you could connect a hard drive, usb webcam, etc...and is all open source...There is also a commercial version called PogoPlug if your are interested in ready to go software
http://www.pogoplug.comBTW the average power consumption is ~5W !!