On a not-strictly-wireless note, I've been using the Debian-based distro
grml lately and I'm well impressed. It's a live-CD distro with a nice HD installer and it's got all the stuff I typically have to add later to my usual OS of choice,
Arch Linux. Kismet, Ralink-USB modules, Aircrack-NG, and good hardware detection.
It's got the peekitty seal of approval, and that's better than a raging case of the clap.