Hewlett-Packard's USB Disk Storage Format Tool can quickly and thoroughly format virtually any USB flash drive in a wide range of file systems as well as create bootable USB media.
You can even boot from flash drives, just like the old floppies, which, together with portability, universal compatibility, and enough space to host useful tools, makes them ideal recovery devices. USB flash drives are this century's floppies, holding everything from personal and medical information to music and pictures and even secure data, with the added advantage of being small and rugged enough for keychain duty.