I found that patent when I was in college. My roommate was a dancer and trying to figure out how to do his forward lean. I had to be like "Well...the bad news is, you'll never be able to do it. The other bad news is that Michael Jackson is a cheater."
new thread http://mturkforum.com/showthread.php?34192-Can-t-Find-Awesome-HITs-2-26-For-the-Hits-on-Friday