Dennis Dirk Blocker (born July 31, 1957 Hollywood, Los Angeles, California, USA) is an American actor. He earned his first regular TV role on Baa Baa Black Sheep (1976–1978), playing pilot Jerry Bragg. He stars as Detective Hitchcock on the Fox/NBC comedy series Brooklyn Nine-Nine. He is the son of actor Dan Blocker and Dolphia Lee Blocker (née Parker). His brother is producer David Blocker.