I guess I should suggest the obligatory Knoppix. It has just about everything you could fit onto a 700mb cd.
http://knoppix.net/
What is KNOPPIX?
KNOPPIX is a bootable CD with a collection of GNU/Linux software, automatic hardware detection, and support for many graphics cards, sound cards, SCSI and USB devices and other peripherals. KNOPPIX can be used as a Linux demo, educational CD, rescue system, or adapted and used as a platform for commercial software product demos. It is not necessary to install anything on a hard disk. Due to on-the-fly decompression, the CD can have up to 2 GB of executable software installed on it.
What software is installed on the KNOPPIX-CD?
The following Highlights are available in this Debian-based (
www.debian.org) CD:
* Linux-Kernel 2.4.x and 2.6.x
* KDE as the standard desktop with K Office and the Konqueror WWW-browser konqueror
* X Multimedia System (xmms) an MPEG-video, MP3, Ogg Vorbis Audio player and xine
* Internet connection software kppp,pppoeconf (DSL) and isdn-config
* Gnu Image Manipulation Program (GIMP)
* utilities for data recovery and system repairs, even for other operating systems
* network and security analysis tools for network administrators
* OpenOffice(TM), the GPL-developed version of the well-known StarOffice(TM) office suite
* many programming languages, development tools (including kdevelop) and libraries for developers
* in total more than 900 installed software packages with over 2000 executable user programs, utilities, and games