Western Digital has one of the most stylish portable hard-drives on the market with the Passport.

The USB powered 250GB drive is ultra-compact and sports a glossy black casing.
The drive comes with installed Google software (Windows Only) to search and organize your data. WD Sync synchronization and encryption software lets you take your critical data with you. Plug WD Passport into any PC, edit files, read e-mail, and view photos. Then sync all of your changes back to your home or office computer. Your data is protected with 128-bit encryption. (Windows only)
The Western Digital Passport 250GB hard-drive (WDXMS2500TN) sells for $184.99 on Amazon.com. Compare Offers from other Stores.