Apricorn EZ Bus Mini 20GB

Portable hard drives are convenient. "USB powered" drives are really cool. I just hate having to carry the power bar, along with an external drive. Apricorn has a mini hard drive that does not require an external source of electricity. the 500ma of the USB port is enough. You will have to trade performance for portability as this little gizmo is not really a Ferrari.

Plus, it's expensive, with a price tag of $165-$200. [Complete review here]