Chiefly the ballet-contortionist at the Chinese State Circus, dancing Swan Lake. She does an arabesque, en pointe, on her partner's head.
It's astounding. She also dances on his shoulders. And it makes all those Odettes/Odiles who spend most of the show on the boards look distinctly second-rate. What's 32 fouettes, even punctuated with double or triple turns, compared with head dancing?