Gregory Harrison is an American actor. He started his career in the 1973 film The Harrad Experiment. He later made his first TV role in the 1975 television movie Trilogy of Terror. His next film roles were in Jim the World’s Greatest and Fraternity Row. On TV, he played the title role in Logan’s Run. He then gained wider recognition for starring as Dr. George Alonzo “Gonzo” Gates in the medical drama Trapper John, M.D. After the series ended in 1986, he starred in the film North Shore. He went on to star as Michael Sharpe in the CBS series Falcon Crest and as Jack Taylor in the sitcom The Family Man. In the 2000s, Harrison had recurring roles in such shows as Ed, Judging Amy, Strong Medicine, Reunion, Joey, and One Tree Hill. More recently, he appeared in Chesapeake Shores and American Housewife.