Several posters have reference encryption on a USB drive. My recently purchased SanDisk Cruzer includes a bundled (free) version of CruzerLock software for encryption licensed from encryptX. It's a proprietary bit of software with a simple password and easy to use. Perhaps not as secure as a PGP solution (or maybe it is, there's not much technical data provided), but it's simple enough for those intimidated by a more technical solution.

Anyone have any experience with this software?