Kennedy hosted many game shows over his lifetime. His most successful shows were "You Don't Say!" (aired on NBC from 1963-1969 and on ABC in 1975), "Split Second" (1972-1975), "Name That Tune" (1974-1981), and "Password Plus" (1980-1982; took over for original host Allen Ludden after Ludden's death). He also hosted other shows such as "Whew!" (1979-1980), "Body Language" (1984-1986), and a syndicated version of "The Price is Right" (1985-1986). He retired in 1989.