Roberts was a special guest star in many TV shows like "Tombstone Territory" (1958), "Zane Grey Theater" (1958), "The Detectives" starring Robert Taylor (1960), Jim West, "Gunsmoke" (1967), "Mission Impossible" (1967-1973), "Banacek" (1972), "Mannix" (1973), "Police Story" (1974-1975), "The Six Million Dollar Man" (1976), "Baretta" (1977), "Vega$" (1980) and "Diagnosis Murder" (1994-1997).