James and I have been watching this seemingly in all of our spare time for the last two days. He enjoys the music almost as much as the movement. He tells me he wants to do this when he grows up. I said he'd have to start now-and practice would consist of more than his current routine of jumping on the couch or jumping from couch to beanbag chair. He is only moderately interested in starting now. My mother's heart is slightly relieved, but I may look into gymnastics for him. It's pretty sweet. Enjoy