LAMPPIX is a Linux live CD originating in Germany, based on Knoppix and Damn Small Linux. It comes with the XAMPP web server, MySQL database, PHP and Perl scripting languages, as well as other tools to run PHP-driven web pages directly off a CD-ROM.
The Linux Live CD booting a webserver. LAMPPIX allows you to burn your web projects (i.e. PHP presentations or Perl scripts) onto a CD-ROM and give them away to others. They will only have to insert the CD and reboot -- if you configured LAMPPIX right (and this is really easy!) they can view your project.