Mark Watson's Comedy Marathon

At the end of February I'll be involved in some way in Mark Watson's latest ridiculous feat-of-endurance comedy stunt, this one a 26.2-hour-long comedy show to coincide with the London Marathon. It will feature all sorts of idiots doing ridiculous endurance-style challenges. I'm not sure exactly what mine's going to be yet, but I've got some ideas for it that should fill a few hours if need be. All proceeds go to the Alzheimer's Society and Alzheimer's Research UK, and you can book tickets and find out more information here.