Mepis!! SimplyMepis, to be more exact.
Mepis is, hands-down, the easiest livecd I've seen. IMHO, Mepis has superior driver support than any other distro I've tried. (I believe) they have 100% backwards compatibility with debian's packaging system, therefore, you should be able to use debian's huge apt repository for tons and tons of packages. Not only that, but they have an installer on their livecd so you can install it to their hard drive. Mepis was so easy I got bored.
