It took the couple in this video 8 years to perfect this ballet/ gymnastic routine. It is spectacular. The narration is in French. Hang in there she talks for about a minute. http://www.youtube.com/watch?v=N5lN96dgt_Y
Amazing! The muscle control that they both possess. Yet somehow her hyper-flexibility creeped me out. How could anyone be so stretchy and still stand up straight?