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Andrea Petkovic at the 2010 French Open.
Andrea Petkovic of Germany danced her way into the hearts of tennis fans, at the 2010 U.S. Open, she said on YouTube. After every match win, she does her now famous "Petko-Dance," and the crowd goes wild.
Perhaps her most popular off-court activity is her "Petkorazzi" videos on YouTube. Her private YouTube channel has 1,667 subscribers and some of the videos have even been broadcasted at various tournaments.
It's not just YouTube that Petkovic is a part of. She has 19,901 people who "like" her Facebook fan page and has 16,832 people following her on Twitter.
It's not just her personality that gets people excited about her. She has a lot of talent on the court, too. Last month, she made it to the quarterfinals in Stuttgart, before falling to top-seed, Caroline Wozniacki, according to the WTA Tour website.