- The Rifleman — "Young Englishman" (1958); "The High Country" (1961)
- Tales of Wells Fargo — "Butch Cassidy" (1958); "The Wayfarers" (1962)
- Trackdown — "Hard Lines" (1959)
- Bat Masterson — "The Black Pearls" (1959); "Six Feet of Gold" (1961)
- Wanted: Dead or Alive — "Reunion For Revenge", "The Kovack Affair" (1959); "The Trial" (1960)
- Bronco — "Payroll of the Dead" (1959); "Shadow of Jesse James" (1960)
- Have Gun Will Travel — "One Came Back" (1959); "The Gladiators" (1960)
- Klondike (1960-1961)
- Peter Gunn — "The Murder Clause" (1960)
- Lawman — "The Catcher", "The Showdown" (1960)
- The Deputy — "The Truly Yours" (1960)
- Acapulco (1961) (canceled after 8 episodes)'
- Laramie — "The Mark of the Maneaters" (1961)
- Cheyenne — "Trouble Street" (1961)
- Bonanza — "The Fugitive" (1961)
- Rawhide — "The Hostage Child" (1962)
- Combat! — "Masquerade" (1963)
- The Twilight Zone — "The Old Man In the Cave" (1963)
- The Greatest Show On Earth (1963) — "Uncaged"
- Stoney Burke — "The Test" (1963)
- Route 66 — "Kiss the Monster, Make Him Sleep" (1964)
- The Defenders — "The Man Who Saved His Country" (1964)
- Bracken's World — "Fallen, Fallen Is Babylon" (1970)
- The Dain Curse (1978) (miniseries)
- Jacqueline Susann's Valley of the Dolls (1981)
- Darkroom (1981-1982)
- Malibu (1983)
| - Draw! (1984)
- Faerie Tale Theatre — "Pinocchio" (1984)
- Sins of the Father (1985)
- The Edge and Beyond (1988-1990) (narrator)
- The Infinite Voyage (host from 1990-1991)
- Captain Planet and the Planeteers (voice-over cast member from 1990-1993)
- Silverfox (1991) (pilot)
- Crash Landing: The Rescue of Flight 232 (1992)
- Murder She Wrote — "Day of the Dead" (1992)
- National Lampoon's True Facts (1992)
- The Fifth Corner (1992) (canceled after 6 episodes)
- Christmas Reunion (1993)
- The Hit List (1993)
- Greyhounds (1994) (pilot)
- The Avenging Angel (1995)
- Picket Fences — "Upbringings" (1995)
- Ray Alexander: A Menu for Murder (1995)
- The Cherokee Kid (1996)
- The Second Civil War (1997)
- Profiler — "Shadow of Angels" (1997)
- Mr. Murder (1998)
- Noah's Ark (1999)
- Vengeance Unlimited — "Judgment" (1999)
- Shake, Rattle & Roll: An American Love Story (1999)
- Missing Pieces (2000)
- Walter and Henry (2001)
- Arli$$ (2002) — "The Immortal"
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