Desktop (main squeeze when at home):Lenovo H430, a middle-of-the-road tower with Intel i5-3330 CPU @ 3.00GHz, 8 GB RAM. Runs Windows 7 and Ubuntu 12.04.
Travel netbook: Asus 1015e Intel Celeron 2-core, 2 GB RAM, with Ubuntu 12.04. This is the touchiest machine in the stable.
Laptop: Toshiba satellite L305-S5875, Intel Pentium 2-core with 3 GB RAM. Right now it runs Zorin, Sabayon, and Manjaro. It's being used as a test machine.
2 old Mac iBooks, one running Tiger and one running Lubuntu.
Despite all these silly machines and OS, I'm still so much a newbie I have to look up every damned terminal command before I can do anything.