IRONKEY

"The World's Most Secure USB Flash Drive with Internet Protection Services."

One of these is on its way here for testing. I'll let you know how we make out.

In the meantime, make yourselves aware of it. The concept alone - a super-secure USB memory stick - makes this the 'authorized' info-fob of choice for business and government.

One really cool 'Mission Imposible' feature...
"To prevent unauthorized people or crimeware (malicious software such as viruses and Trojans) from gaining access to your encrypted drive, the IronKey prevents password guessing attacks (e.g. brute-force or dictionary attacks). After 10 incorrect password attempts (and ample warnings), the IronKey locks out all further password attempts. It initiates a patent-pending self-destruct sequence that securely and permanently erases your encryption keys and data."

If self-destruction doesn't produce a puff of smoke, I'll suggest it to them. (more) (datasheet)
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(UPDATE)
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I received an IronKey for testing and have been putting it through its paces for about a month now. Flawless, easy to use; as security should be. We are recommending this to our clients.
(I neither sell, nor receive commissions from, the products I recommend. Recommendations are made based solely on my client's best interests.)