Mastery of the martial arts demo is a beautiful, yet delicate thing. How many balsa wood boards does one attempt to break? How high does your green belt student hold them? Nunchucks or bo staffs ... or both? Or, sais? Do you involve shoulder rolling and that one 12-year old gymastics student for cartwheels? Bedazzling of gis?
There's so much to think about? Then there's the music. Are you required to use "The Final Countdown"? Apparently, not.