Check out the special effects that this 17 year old was able to quickly and easily add to her videos using a Logitech Quickcam Orbit MP. Very interesting, and amazing that these effects are now available on the fly.
http://www.youtube.com/watch?v=o32oHGTOzTE&eurl=http%3A%2F%2Fwww%2Ephuba%2Ecom%2F