Kingston DataTraveler
This drive encrypts your data and self destructs after 25 failed password attempts.
The Kingston DataTraveler Elite Privacy Edition is the worldâ€â„¢s first USB Flash drive that secures 100% of data on-the-fly via 128-bit hardware-based AES encryption.
There are 256 MB, 512 MB, 1GB, 2GB and 4 GB versions, with prices ranging from $48 to $347.