Nice!
Shame I'm not at home, I could take a screen-grab of my PC's name. Following my XP trouble, on the Network it's currently known as JUNKEEP.
Planets and moons with the workgroup as MILKY-WAY here.
So, we have, currently, Deimos (This PC), Pluto (MBP) and Mars (Ubuntu box) and, in theory if she hasn't runied it, my sister's laptop is Phobos and her BF's is Charon.