Amazon is selling the Western Digital 640GB Caviar Black for just $64.99 shipped. These drives feature dual processor technology, a 32MB cache, StableTrac, and NoTouch ramp load technology. Product page.

Data Lifeguard is an exclusive set of data protection features, including shock protection. WD’s Data Lifeguard technology automatically finds, isolates, and repairs problems that may develop over the life of a hard drive.

[via Amazon]