Xander Berkeley

Alexander Harper "Xander" Berkeley (born December 16, 1955) is an American actor. He is known for his television roles of George Mason on the political thriller series 24, Percy Rose on the action thriller series Nikita and Sheriff Thomas McAllister on the crime drama The Mentalist. He currently plays Gregory in AMC's The Walking Dead. 2Early life and education Berkeley was born in Brooklyn, New York on December 16, 1955, but has lived most of his life in New Jersey. He attended Hampshire College and worked in the theaters at the five college system which Hampshire was a part of, including Smith, Mount Holyoke, Amherst, and the University of Massachusetts. Berkeley worked in the Regional and Repertory Theaters in addition to Off Broadway while living in New York. A casting agent saw Berkeley in a play written by Reynolds Price called Early Dark, and encouraged him to move to Hollywood. 2Career Berkeley began playing roles in 1981, with early appearances in M*A*S*H, Cagney & Lacey, Remington Steele, Miami Vice, Moonlighting and The A-Team. Although not becoming a household name, Berkeley's face was increasingly recognizable into the 1990s. His later television guest roles included The X-Files, CSI, ER and Law & Orde