Gregory Harrison

Gregory Neale Harrison (born May 31, 1950) is an American actor known for his roles in various TV series. He gained popularity for portraying Dr. George Alonzo 'Gonzo' Gates in the CBS series Trapper John, M.D. (1979–86), and as ruthless businessman Michael Sharpe in Falcon Crest (1989–1990). Since 2015, he has played Joe O'Toole in the Hallmark Channel films of Signed, Sealed and Delivered. Harrison was born in Avalon, California, in 1950 and served in the United States Army as a medic during the Vietnam War era. He also starred as the title character in the sci-fi series Logan's Run (1977–78) and appeared in the NBC miniseries Centennial (1978–79).