Well, my PC's names only come up when I'm working over a LAN, where the computers need to be given share-names over the network. I've had:
Dungeon - Named due to it being set up in a basement.
Soultaker - Named after an obscure anime due to computer being housed in demonic case.
Sekmet - My laptop, named after the Egyptian Goddess of Destruction. Just because.
Sellout - My first non-homemade Dell PC
Gundam - Current PC, being the first cutting-edge computer I've put together (most of the ones before this were behind the curve a bit).