This Hard Drive

OfficeDepot.com has the Toshiba USB 2.0 Portable External 320GB Hard Drive for $130 with free shipping. Includes NTI Shadow backup software.

Product description from OfficeDepot.com:

• Compact and lightweight (only 0.65"H x 3.2"W x 5"D), this highly portable drive fits comfortably in any backpack, travel bag or computer bag.
• Take your music, photos, videos, spreadsheets and other files with you wherever you go!
• Back!
  up files from your desktop or notebook to free up space on your hard drive and ensure that your computer’s performance isn’t slowed by thousands of photos, videos, songs and other files.
• Hi-Speed USB 2.0 interface allows fast transfer rates — up to 480Mbps.
• Internal shock sensor and ramp loading technology help protect your data if the drive is dropped or jostled.
• Plug and play. Works right out of the box!
• Drive is USB-powered, so no AC adapter is needed.
• For use with Windows 2000/XP/Vista and Mac OS X 10.3.9 and later.
• Backed by the manufacturer’s 3-year limited warranty.

Product link.