7 distros on 1 Live CD, as seen on distrowatch weekly
If you are a fan of mini Linux live CDs, you might be interested in "Multi Distro", a compilation of several bootable mini live CDs on one disk. The latest version includes no fewer than seven distributions; these are SLAX 4.2.0, BeatrIX November 04, Damn Small Linux 0.8.4, INSERT 1.2.16, SAM 1.1, GeeXboX 0.99, and Recovery Is Possible. The CD also comes with Memtest86, a memory diagnostic program. All these options are neatly arranged in the initial GRUB menu - just take your pick and boot whichever distribution you fancy trying out today. The project doesn't seem to have an official web site, but the latest ISO image, version 2.0, is available for free download from here: mdv20.iso (699MB).