It's Mystery Anime Theatre with a bit of a twist. :) In the spirit of Rocky Horror, we'd pick one episode of a popular anime (preferably a 4Kids dub) in which to reenact on stage while the real footage played in the background. The audience is encouraged to partcipate by yelling various comments or throw certain items at the stage (provided by the con with a card telling them when to throw them).
I'm looking for suggestions of anime to reenact and volunteers! I still have plenty of room to fill! :D