Damien Stolarz turns his USB flash drive into a bootable device:

The cool thing is, the HP utility is reported to work with many other flash drives - I have a no-name USB 2.0 thumb drive, made it bootable with the HP utility on a 1.1 USB bus, and then used it to boot a Via EPIA-M2 computer by setting the BIOS to “boot from USB hard drive”.

This is ridiculously useful: Imagine being able to carry a bootable, configured-as-you-like Knoppix system on your key-chain…