From Wikipedia, the free encyclopedia. Matthew Ray Prokop (born July 29, 1990)[1] is an American former actor. He is known for his roles as Jimmie "The Rocket Man" Zara in the Disney film High School Musical 3: Senior Year (2008) and Josh Rosen in the Disney Channel Original Movie Geek Charming (2011). In 2011, Prokop was represented by Management 360 and APA. His first acting job was a brief appearance on Hannah Montana in 2007, followed by a walk-on role on The Office. He guest starred on M
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