Born on November 24, 1947, in Baltimore, Maryland, he is an American actor renowned for his role as Captain Howling Mad Murdock on the 1980s TV series "The A-Team." He also gained fame for portraying Reginald Barclay in "Star Trek: The Next Generation" and its subsequent series and films. With a career spanning several decades, he has lent his voice to various animated series and video games. He studied at Towson University and began his career in theater before transitioning to film and television.