William Dwight Schultz (born November 24, 1947) is an American stage, television, film actor and voice artist. He is best known for his roles as Captain "Howling Mad" Murdock on the 1980s action series The A-Team, and as Reginald Barclay in Star Trek: The Next Generation, Star Trek: Voyager and the film Star Trek: First Contact. He is also well known in animation as the mad scientist Dr.