Sent to you by Musheey via Google Reader:
Linux only: Free open-source app Reconstructor creates custom Ubuntu-based live CDs. Have you settled on the perfect Ubuntu installation that you wish you could take from computer-to-computer? Reconstructor offers up a GUI that lets you do exactly this. Reconstructor customizes the packages and modules included in the installation, the included art-work and much more. After you choose all that you want bundled into your Live CD, Reconstructor generates a burnable ISO of your newly created OS. Reconstructor is a free download for Linux only.