ITX Server Project
Bought a little 1ghz 1gb ITX machine with an 80gb HDD , which is about the size of a CD ROM drive with half the depth.
Check out this YouTube video: http://www.youtube.com/watch?v=E0Ee4tNl3Vg
Hopefully looking to put Ubuntu server on it, with LAMP and SVN. Might look at getting Enemy Territory Quake Wars ded server on it as well.
More info once its up