I've got a big ugly full tower here running 24/7 that I should really get rid of. It ran MythTV (taken over by Sky+), Asterisk (taken over by cheap mobile phones) and a bunch of other fairly redundant stuff.

Thinking about a fanless Epia SN, 8GB Compactflash, Chenbro E34069 (fanless PSU), DVDRW, 1TB Drive (for now), and 2GB RAM. Comes to 550... which is a lot for what is an upgrade of a machine that does work at the moment. Wish I had something smaller and neater like this to start with!