Comment grml (Score 2, Insightful) 184
I have a couple lying around, but the one I always pull out is grml. It's focused on text tools --"linux for sysadmins" I think is the phrase they use. It's booted on everything I ever tried it on and has good support for wireless cards. Plus they can fit a lot more on a cd by skipping KDE, and it boots so much faster than knoppix.