Howard started his acting profession playing the person Winthrop Paroo in the film adaptation of The Music Man with Robert Preston and Shirley Jones. After that task he took part in the TV series The Andy Griffith Show and showed up in the film The Romance of Eddies Dad with Glenn Passage. His most outstanding cooperation is in the series M A S H playing a trooper in the Korean Conflict. Yet, he is additionally known for acting in the series Cheerful Days when he played Richie Cunningham.