- The Gilligan Manifesto
2018 Himself
- Mystery Science Theater 3000: The Movie
1996 Steve Carlson (archive footage)
- Blue Movies
1988 Mr. Martin
- Robotech II: The Sentinels
1988 Narrator (voice)
- Off the Wall
1983 Mr. Whitby
- The Harlem Globetrotters on Gilligan's Island
1981 Professor
- The Great Skycopter Rescue
1980 Professor Benson
- The Castaways on Gilligan's Island
1979 Professor
- Rescue from Gilligan's Island
1978 Professor Roy Hinkley, Jr.
- The Ghost of Flight 401
1978 Loft
- Police Story: No Margin for Error
1978 Captain
- Hitch Hike to Hell
1977 Captain J.W. Shaw
- MacArthur
1977 Admiral King
- Nowhere to Hide
1977 Charles Montague
- Collision Course: Truman vs. MacArthur
1976 Gen. George Stratemeyer
- Adventures of the Queen
1975 Forbes
- You Lie So Deep, My Love
1975 The Foreman
- Three Days of the Condor
1975 Intelligence Officer at Briefing (uncredited)
- The Man from Independence
1974 Linaver
- Aloha Means Goodbye
1974 Dr. Frank Franklin
- The Horror at 37,000 Feet
1973 Jim Hawley
- Beg, Borrow...or Steal
1973 Alex Langley
- The Movie Murderer
1970 Cliff Thomas
- The Greatest Story Ever Told
1965 Scribe
- A Distant Trumpet
1964 Captain Brinker
- The Saga of Hemp Brown
1958 Hook
- Badman's Country
1958 Sundance
- The Space Children
1958 Joe Gamble
- Attack of the Crab Monsters
1957 Hank Chapman
- Rock All Night
1957 Jigger
- Courage of Black Beauty
1957 Ben Farraday
- This Island Earth
1955 Steve Carlson
- Ma and Pa Kettle at Waikiki
1955 Eddie Nelson
- Many Rivers to Cross
1955 Banks
- Strange Lady in Town
1955 Shadduck
- Black Tuesday
1954 Howard Sloane
- Johnny Dark
1954 Emory
- Ride Clear of Diablo
1954 Jed Ringer
- Seminole
1953 Lt. Hamilton
- It Came from Outer Space
1953 George
- Column South
1953 Biddle
- Tumbleweed
1953 Lam Blandon
- Law and Order
1953 Jimmy Johnson
- The Stand at Apache River
1953 Greiner
- Rancho Notorious
1952 Chuck-A-Luck Wheel Spinner (uncredited)
- The Turning Point
1952 Herman (uncredited)
- Loan Shark
1952 Charlie Thompson
- For Men Only
1952 Ky Walker
- Back at the Front
1952 Johnny Redondo - Smuggler
