I've had a number of machine names over the years... currently:
godzilla - a mongo fileserver with 4x120GB RAID5 and 2x120GB RAID1
wibble - a Shuttle SK41G cube
roadwarrior (only when running Windows) - a ThinkPad T22 (it just gets a random DHCP address when running Linux)
jake, elwood, and bluelou - xenU instances when wibble is running Xen
skynet - a Linksys WRT54G running Sveasoft Satori in bridge mode, hooked to a D-Link DI-514 connected to a cantenna that shoots a signal through a couple of buildings over to a coffee shop that I go to, so I can take the laptop there
The cantenna was made from a Glenfarclas Scotch whisky tin.

That's right, for the price of the commercially made "Super Cantenna," you can get a DIY version that comes with a free bottle of very good Scotch.
Another cantenna, made from a ravioli can, gets hooked to the laptop for coffee shop use...