Lets see... My main machine is named Smeagol (LOTR---BEFORE the movies came out
Yes, I am a geek
), my laptop is named my last name because the school wireless network requires that, and my debian box is named Hrothgar, a character from Beowulf.
I generally name my boxen things from LOTR. The trick is finding names that are not too obviously LOTR, especially with the movies out now.