Actor
- Troupers (2009) .... Himself
- McBride: Anybody Here Murder Marty? (2005) .... Mo Feidstein
- Happy Days: 30th Anniversary Reunion (2005) .... Howard Cunningham (archive footage)
- English as a Second Language (2005) .... Wayne
- Nobody's Perfect (2004) ....
- Brother Bear (2003) .... Old Denahi (voice)
- Freaky Friday (2003) .... Grandpa
- Loyalties (2003) .... Smitty
- Judging Amy Maxine Interrupted (2003) .... Arthur
- The Master of Disguise (2002) .... Grandfather Disguisey
- Dying on the Edge (2001) ....
- Touched by an Angel The Face of God (2001) .... Albert Einstein
- The King of Queens Surprise Artie (2000) .... Irv Glassman
- Stuart Little (1999) .... Grandpa Spencer Little
- Brown's Requiem (1999) .... Solly K
- Pacific Blue Hostile Witness (1999) ....
- Patch Adams (1998) .... Arthur Mendelson
- Beloved (1998) .... Barber Shop Man #4 (uncredited)
- My Giant (1998) .... Milt Kaminski
- The Love Bug (1997) .... Dr. Gustav Stumpfel
- For Hope (1996) .... David 'Dave' Altman
- Killer: A Journal of Murder (1996) .... Old Henry Lesser
- Lover's Knot (1996) .... Alan Smithee
- Mimi wo sumaseba (Whisper of the Heart) (1995) .... Shiro Nishi (voice: English version)
- Flesh Suitcase (1995) ....
- Lois & Clark: The New Adventures of Superman The Return of the Prankster (1995) .... Edwin Griffin
- Lois & Clark: The New Adventures of Superman The Prankster (1994) .... Edwin Griffin
- The Golden Girls A Midwinter Night's Dream: Part 1 (1992) .... Miles Webber
- The Golden Girls A Midwinter Night's Dream: Part 2 (1992) .... Miles Webber
- Birch Street Gym (1991) .... Jack
- The Golden Girls The Bloom Is Off the Rose (1991) .... Miles Webber
- The Golden Girls Miles to Go (1991) .... Miles Webber / Nicholas Carbone
- The Golden Girls Witness (1991) .... Miles Webber
- The Golden Girls Where's Charlie? (1991) .... Miles Webber
- The Golden Girls The Pope's Ring (1991) .... Miles Webber
- The Golden Girls Ro$e Love$ Mile$ (1991) .... Miles Webber
- Singer & Sons (1990) .... Nathan Singer (2 episodes, 1990)
- The Golden Girls Triple Play (1990) .... Miles Webber
- The Golden Girls Twice in a Lifetime (1990) .... Miles Webber
- The Golden Girls Girls Just Wanna Have Fun... Before They Die (1990) .... Miles Webber
- Romero (1989) .... Francisco Galedo
- Get Smart, Again! (1989) .... Nicholas Dimente
- The Golden Girls Dancing in the Dark (1989) .... Miles Webber
- Tales from the Hollywood Hills: Closed Set (1988) .... BJ
- I Never Sang for My Father (1988) .... Tom Garrison
- Playing for Keeps (1986) .... Rockerfeller
- Mrs. Delafield Wants to Marry (1986) .... Dr. Marvin Elias
- The Ray Bradbury Theater (1985) .... Colonel Stonesteel / ... (2 episodes, 1989-1992)
- The Fourth Wise Man (1985) .... Rabbi
- The Golden Girls Rose the Prude (1985) .... Arnie Peterson
- The Red-Light Sting (1984) ....
- Kenny Rogers as The Gambler: The Adventure Continues (1983) .... Stowbridge
- The Skin of Our Teeth (1983) .... Mr. Antrobus
- Foot in the Door (1983) .... Jonah Foot
- Help Wanted: Male (1982) .... Eliot Bingham
- The Dream Chasers (1982) .... Telford Stampley
- Born to Be Sold (1981) .... Robert Westfield
- Seems Like Old Times (1980) .... Judge John Channing
- King Crab (1980) .... Mr. Campana
- The Silent Lovers (1980) .... Louis B. Mayer
- The Scarlett O'Hara War (1980) .... Louis B. Mayer
- Kenny Rogers as The Gambler (1980) .... Arthur Stobridge
- The Man in the Santa Claus Suit (1979) .... Dickie Dayton
- Aunt Mary (1979) .... Dr. Hoxley
- 11th Victim (1979) .... Benny Benito
- Better Late Than Never (1979) .... Harry Landers
- Actor (1978) .... Sol Wurtzel
- The One and Only (1978) .... Hector Moses
- Washington: Behind Closed Doors (1977) .... Carl Tessler
- Never Con a Killer (1977) .... Harry Danton
- The Feather and Father Gang (1977) .... Harry Danton (14 episodes, 1976-1977)
- Soap Episode #1.10 (1977) .... Barney Gerber
- The Big Bus (1976) .... Professor Baxter
- How to Break Up a Happy Divorce (1976) .... Mr. Henshaw
- Gus (1976) .... Charles Gwynn
- Silent Movie (1976) .... Engulf
- Flannery and Quilt (1976) .... Sam Quilt
- Medical Story (1975) .... Dr. Fredericchi
- Love and Death (1975) .... Anton Inbedkov
- The Strongest Man in the World (1975) .... Dietz
- The Front Page (1974) .... The Mayor / Herbie / Green Hornet
- Judgement: The Trial of Julius and Ethel Rosenberg (1974) ....
- Dirty Sally (1974) .... Lucius (1 episode, 1974)
- The Sting (1974) .... Kid Twist
- Double Solitaire (1974) .... George
- Needles and Pins (1973) .... (1 episode, 1973)
- Bachelor-at-Law (1973) .... Matthew Brandon
- Murdock's Gang (1973) .... Dave Ryker
- Where Does It Hurt? (1972) .... Dr. Zerny
- Love, American Style Love and the Happy Days/Love and the Newscasters (1972) .... Howard Cunningham (segment "Love and Happy Days")
- A Death of Innocence (1971) .... Alexander Weisberg
- Ransom for a Dead Man (1971) .... Agent Carlson
- Mrs. Pollifax-Spy (1971) .... Nexdhet
- The Lawyer (1970) .... Eric P. Scott
- The Mod Squad The Loser (1970) ....
- The Arrangement (1969) .... Dr. Leibman
- Under the Yum Yum Tree (1969) .... Father
- I Dream of Jeannie Invisible House for Sale (1969) .... Mr. Winkler
- Project X (1968) .... Col. Holt
- Hogan's Heroes D-Day at Stalag 13 (1967) .... General von Scheider
- An American Dream (1966) .... Ganucci's Attorney
- Inside Daisy Clover (1966) .... Cop on Pier
- Harper (1966) .... Sheriff Spanner
- Hogan's Heroes Klink's Rocket (1966) .... General Von Lintzer
- The Spy with My Face (1965) .... Doctor (archive footage)
- The Satan Bug (1965) .... Dr. Ostrer (uncredited)
- The Yellow Canary (1964) .... Ponelli
- Ready for the People (1964) .... Arnie Tomkins
- The Twilight Zone Probe 7, Over and Out (1963) .... General Larrabee
- Two for the Seesaw (1962) .... Bit (uncredited)
- The Couch (1962) .... Victim's Brother (uncredited)
- Insight (1960) .... Eddie / ... (5 episodes, 1967-1980)