Hardware Zone has posted a review of one of the most mobile external HDD enclosures to date from ExBoot.  It’s under 100 grams, less than 6 inches long, and holds 80 Gb.  Since it uses USB2, it’s no slacker when it comes to transfer speeds, and with the bundled software, one touch backups become quite possible. 
“The Exboot EXB-0121 is one of the smallest portable HDD enclosures around, making it a perfect portable solution with data recovery for frequent travelers.”

Here are some more Storage reviews from around the web:

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