Review: Slackware Linux
"Slackware 8.1 is a four-disk set. The first disk in the set is the only one you really, absolutely need to install Linux. The second CD is a live filesystem CD that can be used to boot into Linux without installation. Disks three and four contain source code and the "contribs" — software that's not part of the main distribution, but that you might want anyway." Read the review at UnixReview.