Gregory Harrison

Gregory Neale Harrison (born May 31, 1950) is an American actor. He is known primarily for his roles as Dr. George Alonzo "Gonzo" Gates, the young surgeon assistant of Dr. Trapper John McIntyre (played by Pernell Roberts) on the CBS series Trapper John, M.D. (1979–86), and as ruthless business tycoon Michael Sharpe in the CBS series Falcon Crest (1989–1990). Since 2015, he has played Joe O'Toole, father of Oliver, in the Hallmark Channel expansion films of Signed, Sealed and Delivered. Early life and career Harrison was born in Avalon, California, in 1950, the middle child of Ed Harrison, a ship's captain and poet, and Donna Lee Nagely, an aspiring dancer; they eventually divorced. He has an older sister, Kathleen (born 1948), and a younger brother, Christopher (born 1961). He served for two years in the United States Army during the Vietnam War era as a medic. He portrayed the title character in the science fiction series Logan's Run (1977–78), after which he played Levi Zendt in the NBC miniseries Centennial (1978), based on James Michener's epic novel of the same name, which was first televised on NBC between October 1978 and February 1979.