The coolest thing about the OQO is you can use the same computer running Windows XP Professional at work or while mobile. It is true that you can do the same thing with a notebook comuter, but the OQO takes the mobility aspect a lot further. The next two screenshots show the OQO in handheld and docked modes.
For more photos, see the Engadget hardware.
Here is a batch of reviews:
New York Times
Wall Street Journal