The Deccan Herald Internet Edition is running a story about LiveCDs. It is aimed at Windows users interested in trying out Linux, and covers everything, from how they work, how to get them, advantages of running them over normal hard drive installs, and even several more specialized LiveCD projects.
One of the first live CDs to manage this was Knoppix, which is so good at sniffing out strange hardware and configuring it that sceptical Windows users are regularly bowled over by the sight of their machine being turned into a powerful GNU/Linux system in minutes.