This is a pretty clever idea. We use a USB hub ourselves and in an attempt to clean up our desktop have resorted to mounting it to the underside of the desk. While this has definitely cleared off our desktop, plugging in things like digital cameras are no longer an easy task. Belkin has a new usb hub that is designed to drop into 3 inch grommet holes that are standard in many office desks...or easily drilled out with a 3 inch hole saw.
There are three variations of this hub, a front acess and flush mounted USB hub, but what new accessory would be complete without some sort of iPod connection? Well Belkin has thrown that in here as well. Available soon for $39.99 here