Western Digital My Passport Essential 400GB Portable Hard Drive for $99.99 shipped after automatic instant $50 off.  The discount will appear under the Review and Pay step during checkout.  My Passport Portable edition does not require a separate power supply like most external hard drives and is also smaller than most of them, making it much more convenient to carry around and truly portable. Most places have it for $140 or more.  In fact, some places have this drive for $130 on their Black Friday sales.

This deal has expired as the price has been raised.  That was fast.  Congratulations to those able to get in on it.