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Jacob Zachar
Jacob Zachar's first credited screen role in the Sid Haig-starring black comedy "Little Big Top" didn't turn the young actor into a star overnight, but his part was significant enough to catch the eye of ABC Family. The network cast Zachar in the leading role of Rusty Cartwright, a nerd desperately seeking popularity on the hit comedy "Greek" opposite fellow up-and-comer Clark Duke. Following the show's fourth and final season, he snagged top billing in the 2012 zombie comedy "Detention of the Dead" and guest starred in one of the final episodes of "House M.D.."