Exton remasters some pretty difficult to install Linux Distros like Crux and Gentoo and turns them into live isos. He also has Arch and Slackware and other remastered live cds that are off the beaten path so to speak.
A good site IMO. I keep Extons site (bottom Link) bookmarked along with http://kmandla.wordpress.com/ as I find that Motho ke motho ka botho a good wealth of information on doing advanced stuff in any Linux Distro or Desktop that I am using. Just sharing the info is all.
Exton|Defender Super Rescue System » version 100914 based on Slackware 13.1 with LXDE
Extons Home site