Zac Efron will appear in “Entourage,” the HBO series. The show is set to begin on July 12, 2009. Zac recently won the award for “Best Male Actor” in the MTV Movie Awards for his work in High School Musical 3. He was seen filming in Niketown at Beverly Hills, California. In the scene he will be talking on a cell phone and playing himself. In this particular scene it appears there aren’t any other actors from Entourage with him.