18 ways of not screwing your computer

Linux, that virus that some people call operative system, has at least 18 live distributions (without install), say OSNews.com and DiarioTI:

Basilisk (basado en Fedora)
BeatrIX (basado en Debian/Knoppix/Ubuntu)
Berry Linux (basado en Fedora)
Damn Small Linux (basado en Debian)
FreeSBIE (basado en Free BSD)
Gnoppix (Knoppix/Debian plus Gnome, actualmente fusionado con Ubuntu)
Kanotix (Knoppix/Debian modificado)
Knoppix (basado en Debian)
Luit (Debian/Xfce)
Mandrake Move (basado en Mandrake)
Mepis (Debian)
Morphix (Debian modular)
PCLinuxOS Preview (variante de Mandrake)
Sam (Mandrake/Xfce)
SLAX (Slackware)
Suse 9.1 and 9.2 (basado en rpm)
Ubuntu Live (Debian)
Xfld (Debian/Damn Small Linux y Xfce).

I'll add one, with link(Google the rest), it is Linex, based in Debian.