This is pretty neat... if you want to cut to the chase (past the blah-blah-blah of the narrator) then I'd suggest starting at about 3 minutes.
I felt like I was watching a bird courtship dance after a bit.
http://www.boingboing.net/2011/04/15/the-courtship-dance.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+boingboing%2FiBag+%28Boing+Boing%29