Take the Triple X Challenge

Submissions are judged and graded for width of space (relative to the person), height, location, and straightness and splayedness of body. Obviously the move is more impressive if attempted in a public space with onlookers present, as this adds pressure to the performance. The House Gymmer will also be laughed at by the crowd if he fails miserably. However, the crowd can be an advantage as their cheering can spur the person on, and if serious injury occurs, there will be lots of people around to ring for an ambulance.
Attempts worthy of note:
Steve Ray
Ché Garnar-Hamilton
Mark Thomas
Best of the Rest