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Zac Efron turns 25 on Oct. 18, 2012. The actor is known for his role in the 'High School Musical' film series as well as the movies '17 Again,' 'The Lorax' and 'Charlie St. Cloud.' He also appeared in the 2012 film 'The Paperboy' with Nicole Kidman.
(Pictured: Zac Efron talks to OTRC.com at the premiere for his 2012 film 'The Lorax' on February 19.)