AnimeExpo, the anime convention, is running a now regular event of parliamentary debate. They ask for teams to notify of their interest ahead of the con, and use interesting geek motions.
This is one of the most fun links I came across when it comes to debate.
I couldn't get it done last year, but Dan Kaminsky, Steve Llano and myself plan an event such as this at Defcon. Hopefully we will have the time to get it done this year. Naturally, all help is appreciated, and people who understand debate are more than welcome to join in the effort.