This is a review for the Toshiba E05A064PAU2EW_C Store Art3 2.5" White 640GB as opposed to all the other sizes that seem to be bundled into the same review.
The item worked straight out of the box. The supplied Mini-USB cable connected straight up to my PC, and the drive was recognised immediately. No issues when swapping between my Works Lenovo and home Toshiba Satellite.
It's smaller and thinner than the Freecom one I have at work, and I prefer the mini USB to the hard wired connector in the Freecom drive. Easily slips into a pocket and is very portable. Disappointing it didn't come with even the most basic of protective cases, but I knew that before I got it.
The white case is easy to keep clean, although it does seem to attract dust, possibly due to static.
A white LED flashes when the drive is active, and stays on when it's not doing anything, so you know it's still connected.
It feels solid and robust, and there is a rubber buffer around the perimeter that should give some protection.
I haven't had it long enough to comment on reliability (which is the big drawback in these reviews perhaps) but I'm very happy with how it's worked out so far.
Like all drives, make sure you use 'safely remove hardware' before disconnecting from the USB
Edit: January 2012 - still working fine with no issues. I use it mainly for backing up files off my Laptop, on a weekly basis, and storage of photos.
Edit: December 2012 - still working fine with no issues. Still almost as good as new. A few minor scratches on the surface, but it's never had any kind of protective cover. I have increased rating to 5* because it has been pretty much perfect.