All those hours spent pumping iron in the gym have certainly paid off for Zac Efron as the former High School Musical star was sporting a rather impressive set of guns when we caught up with him in Los Angeles the other day. The 24-year-old Hollywood actor was wearing a sleeveless top as he left the set of his latest movie, The Paperboy, which also stars Nicole Kidman. The film's about a reporter who returns to his Florida home...