I was at Robogames this year, I didn't watch much of the combots because there are about 60 events going on, I did see some really crazy matches though when i did watch. Too bad they only did a single hour show instead of multiple shows with more different events shown.
The event i competed in is called Mech Warfare, I'll just leave a link and a video if your interested in walking robots with airsoft guns and remote operation. It is a big challenge on all fronts of robotics.
http://www.youtube.com/watch?v=FrhlYsF2uTU
http://mech-warfare.com/