Born In Washington, D.C., Matt grew up in Arlington, VA, the son of Frederick W. Clark, a boat builder and cabinet maker, and Theresa (Costello) Clark, owner and director of a private school in Arlington. Following a two-year stint in the army, Matt attended George Washington University, but dropped out to join a local Washington, D.C. theatre group. He moved to New York in the mid-50's and studied acting at the HB Studio with Herbert Berghof, William Hickey and Frank Naughton. After working at the famous Living Theater and starring in several off-Broadway plays, he moved to California to begin his film career. Matt has appeared in more than 50 feature films, in addition to countless television movies and TV series. He is the director of the film, Da (1988), starring Bernard Hughes, Martin Sheen, and his old acting teacher, Bill Hickey. Matt is father of 4 children: Matthias Clark (musician), Jason Clark (producer), Seth Clark (film editor) and Aimée Clark (producer).