Was it real or fake? That's the question people were asking about Roger Federer's trick shot, where he serves and knocks a bottle off an unsuspecting crew member's head on the set of a Gillette Fusion photo shoot. The clip of tennis' William Tell went viral shortly after it was posted on YouTube in August, receiving 5 million hits in less then two weeks. It's now up to almost 8 million, and ranks No. 135 on YouTube's list of all-time most watched sports clips. (By comparison, the No. 1 clip, Egyptian bodybuilder Tamar El Shahat flexing his muscles, somehow has received 86.3 million views. A montage of Maria Sharapova videos has around 12.6 million.)

—Sarah Thurmond