Who invented it?
Jeffery Daniel (from Shalamar, ("Gonna make this a night to remember"))?
Bill Bailey (the 1950s Tap Dancer, not the Troll-like Comedian).
None of the above.
The male Australian Mannequin Bird MOONWALKS up and down branches to impress his prospective mate.
Watch the video and see for yourself.
This was pointed out by Stephen Fry on an episode of QI some time ago, and some computer whizz kid has produced the excellent video on Youtube only one day ago!