Install Tiger from your iPod

You can install Tiger from your iPod. Neat.
ForeverGeek:

Turn your iPod into a bootable Tiger installation disk. Here’s how:

  1. Make a backup copy of your iPod if necessary (it will be erased in the next step!)
  2. Using Disk Utility, format (Erase) the iPod.
  3. Use the Restore feature in Disk Utility to create an image of the Tiger DVD on your iPod (drag the DVD into the source textbox; drag your iPod into the destination textbox).
  4. You can then plug your iPod in any Mac and launch the Install Tiger software, let it reboot, and follow the instructions to install it!

Apparently you can do this for machines that just refuse to take the Tiger DVD. Very cool.
Via ForeverGeek