Was also a friend of Jane Wyman. Coincidentally, Forsythe starred on "Dynasty" (1981), before Wyman starred on "Falcon Crest" (1981), in the same year.
Was good friends with: Richard Brooks, Tim Conway, Dick Van Patten, Aaron Spelling, Alfred Hitchcock and Richard Anderson.
Was not the first choice for the role of Blake Carrington on "Dynasty" (1981). George Peppard was initially cast as Carrington. However, he quit one week into filming the series premiere due to creative differences with the writers. Forsythe auditioned for and was subsequently cast in the role.
Was offered the lead role on "Trapper John, M.D." (1979), but turned it down.
Was raised in the same city as Leona Helmsley, who in turn attended the same high school as Forsythe.
Was the only actor to appear in all 220 episodes of "Dynasty" (1981).
When he starred in "Bachelor Father" (1957), he moved his family from New York to California.