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 ' , ' and the film '' '' .
He is known for his roles as Captain `` Howling Mad '' Murdock on the hit 1980s action show `` The A-Team '' , and Reginald Barclay in ' , ' and the movie '' '' .