Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Actor | Život brouka | 1998 | Mr. Soil |
| Actor | Planeta opic | 1968 | Cornelius |
| Actor | Batman (1966) | Bookworm | |
| Actor | Útěk z Planety opic | 1971 | Cornelius |
| Actor | Bitva o Planetu opic | 1973 | Caesar |
| Actor | Bedknobs and Broomsticks | 1971 | Mr. Jelk |
| Actor | Dobytí Planety opic | 1972 | Caesar |
| Actor | Noc hrůzy | 1985 | Peter Vincent |
| Actor | Planeta opic | Galen | |
| Actor | Přes palubu | 1987 | |
| Producer | Přes palubu | 1987 | |
| Actor | Nejdelší den | 1962 | Pvt. Morris |
| Actor | Kleopatra | 1963 | Octavian - Caesar Augustus |
| Actor | Černá díra | 1979 | V.I.N.CENT (voice) |
| Actor | Zlo pod sluncem | 1982 | Rex Brewster |
| Actor | Dobrodružství Poseidonu | 1972 | Acres |
| Actor | Mean Johnny Barrows | 1975 | Tony Da Vince |
| Actor | Hrůzná noc 2 | 1988 | Peter Vincent |
| Actor | That Darn Cat! | 1965 | Gregory Benson |
| Actor | Bylo jednou zelené údolí | 1941 | Huw Morgan |
| Actor | The Cat from Outer Space | 1978 | Mr. Stallwood |
| Actor | Lessie se vrací | 1943 | Joe Carraclough |
| Actor | Třída roku 1984 | 1982 | Terry Corrigan |
| Actor | The Pirates of Dark Water | ||
| Actor | Behind the Planet of the Apes | 1998 | Himself - Hosted by (also archive footage) |
| Actor | The Return of the King | 1980 | Samwise Gamgee |
| Actor | Cutting Class | 1989 | Mr. Dante |
| Actor | Největší příběh všech dob | 1965 | Matthew |
| Actor | It! | 1966 | Arthur Pimm |
| Actor | Legenda pekelného domu | 1973 | Benjamin Franklin Fischer |
| Actor | Tales of the Gold Monkey | Bon Chance Louie | |
| Actor | Macbeth | 1948 | Malcolm |
| Actor | Funny Lady | 1975 | Bobby Moore |
| Actor | The Martian Chronicles | Father Stone | |
| Actor | Dobrodružství Bullwhipa Griffina | 1967 | Bullwhip Griffin |
| Actor | Miracle on 34th Street | 1973 | Dr. Sawyer |
| Actor | Život a doba soudce Roye Beana | 1972 | Frank Gass |
| Actor | Thunderhead - Son of Flicka | 1945 | Ken McLaughlin |
| Actor | Méďa Béďa | 1964 | Bullwinp Griffin |
| Actor | The Second Jungle Book: Mowgli & Baloo | 1997 | King Murphy |
| Actor | Midnight Lace | 1960 | Malcolm |
| Actor | Alice in Wonderland (1985) | The March Hare | |
| Actor | The Big Picture | 1989 | Judge |
| Actor | The Fantastic Journey | Dr. Jonathan Willoway | |
| Actor | Shakma | 1990 | Sorenson |
| Actor | Carmilla | 1989 | Inspector Amos |
| Actor | Man Hunt | 1941 | Vaner |
| Actor | The Hollywood Squares | Square Placer (1975) | |
| Actor | Unlikely Angel | 1996 | Saint Peter |
| Actor | Jaká je Daisy Cloverová | 1965 | Walter Baines |
| Actor | My Friend Flicka | 1943 | Ken McLaughlin |
| Actor | 5 Card Stud | 1968 | Nick Evers |
| Actor | The Keys of the Kingdom | 1944 | Francis Chisholm, as a boy |
| Actor | That's Entertainment, Part II | 1976 | (archive footage) |
| Actor | Hart to Hart: Home Is Where the Hart Is | 1994 | Jeremy Sennet |
| Actor | Dead of Winter | 1987 | Mr. Murray |
| Actor | Pretty Maids All in a Row | 1971 | Mr. Proffer |
| Actor | Laserblast | 1978 | Doctor Mellon |
| Actor | Charlie Chan and the Curse of the Dragon Queen | 1981 | Gillespie |
| Actor | Cricket on the Hearth | 1967 | Criket Crocket Narrator |
| Actor | Hollywood Wives | Jason Swandle | |
| Actor | Scavenger Hunt | 1979 | Jenkins |
| Actor | The Loved One | 1965 | D.J.Jr. |
| Actor | The Grass Harp | 1995 | Amos Legrand |