The Western Digital 2TB My Book for Mac External Hard Drive is on sale at B&H for only $69.99. While it is pre-formatted to use the HFS+ Mac OSX file system, PC users can plug it in and reformat as desired. Reviews are great and the price is super sweet. This is a no-brainer deal if I ever saw one. B&H specifically says there is a limited supply at this price, so don't dwell long if you're considering it.