Connection through the back for the arms... -_- Why they would be showing this stuff on tv beats me though.
From a broadcaster's perspective, I've noticed that the Japanese media is swamped with tons of shows like these. Sort of a hybrid live informative documentary with a savvy mix of humor.
As for the flying uke's part ~ I'll take Ron's and Brent's word for it. Deep down, I've always had doubts as to how far one can push your Ki skills. It's inspiring to see and hear about. But its something I believe we as akidoka can come to understand only with more experience.
~ either way --- I find it fascinating. I really love Aikido hehehe