It was painless to work with her,” said Joe Pytka, who directed the superstar's famous Canon commercial. “There was a discipline to her.” ...

In the commercial, that tune is sung by various people as Sharapova walks out onto court for a match. The punch line: Sharapova swings her racket and lets out one of her trademark shrieks.

This video of Djokovic imiating Maria Sharapova's new Head commercial proves that, as per usual, I have very little idea what I'm talking about. Highlights: 0:15 -- The Sharapova shoulder shimmy.