Over the weekend I went to the Seattle Robotics Society meeting in Renton to get a good look at how a Sumobot Competition is run - Delegates attending the Windows Embedded Devcon http://www.windowsembeddeddevcon.com will have the chance to build their own sumobot and tinker with the search and destroy code before going into battle... here's a short video that shows the sumobots in action...

it's here