Filmography
| Role | Title | Year | Character |
|---|---|---|---|
| Actor | A Bug's Life - Megaminimondo | 1998 | Mr. Soil |
| Actor | Il pianeta delle scimmie | 1968 | Cornelius |
| Actor | Batman | Bookworm | |
| Actor | Fuga dal pianeta delle scimmie | 1971 | Cornelius |
| Actor | Anno 2670 - Ultimo atto | 1973 | Caesar |
| Actor | Pomi d'ottone e manici di scopa | 1971 | Mr. Jelk |
| Actor | 1999 - Conquista della Terra | 1972 | Caesar |
| Actor | Ammazzavampiri | 1985 | Peter Vincent |
| Actor | Il Pianeta delle Scimmie | Galen | |
| Actor | Una coppia alla deriva | 1987 | |
| Producer | Una coppia alla deriva | 1987 | |
| Actor | Il giorno più lungo | 1962 | Pvt. Morris |
| Actor | Cleopatra | 1963 | Octavian - Caesar Augustus |
| Actor | The Black Hole - Il buco nero | 1979 | V.I.N.CENT (voice) |
| Actor | Delitto sotto il sole | 1982 | Rex Brewster |
| Actor | L'avventura del Poseidon | 1972 | Acres |
| Actor | Il cobra nero | 1975 | Tony Da Vince |
| Actor | Ammazzavampiri 2 | 1988 | Peter Vincent |
| Actor | F.B.I. operazione gatto | 1965 | Gregory Benson |
| Actor | Com'era verde la mia valle | 1941 | Huw Morgan |
| Actor | Il gatto venuto dallo spazio | 1978 | Mr. Stallwood |
| Actor | Torna a casa Lassie! | 1943 | Joe Carraclough |
| Actor | Classe 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 | Il ritorno del re | 1980 | Samwise Gamgee |
| Actor | Il ritorno di Brian | 1989 | Mr. Dante |
| Actor | La più grande storia mai raccontata | 1965 | Matthew |
| Actor | It! | 1966 | Arthur Pimm |
| Actor | Dopo la vita | 1973 | Benjamin Franklin Fischer |
| Actor | I predatori dell'idolo d'oro | Bon Chance Louie | |
| Actor | Macbeth | 1948 | Malcolm |
| Actor | Funny Lady | 1975 | Bobby Moore |
| Actor | Cronache marziane | Father Stone | |
| Actor | Un maggiordomo nel Far West | 1967 | Bullwhip Griffin |
| Actor | Miracle on 34th Street | 1973 | Dr. Sawyer |
| Actor | L'uomo dai 7 capestri | 1972 | Frank Gass |
| Actor | Il figlio del fulmine | 1945 | Ken McLaughlin |
| Actor | Yoghi, Cindy e Bubu | 1964 | Bullwinp Griffin |
| Actor | The Second Jungle Book: Mowgli & Baloo | 1997 | King Murphy |
| Actor | Merletto di mezzanotte | 1960 | Malcolm |
| Actor | Alice in Wonderland (1985) | The March Hare | |
| Actor | Il grande regista | 1989 | Judge |
| Actor | The Fantastic Journey | Dr. Jonathan Willoway | |
| Actor | Shakma - morire per gioco | 1990 | Sorenson |
| Actor | Carmilla | 1989 | Inspector Amos |
| Actor | Duello mortale | 1941 | Vaner |
| Actor | The Hollywood Squares | Square Placer (1975) | |
| Actor | Come in una favola | 1996 | Saint Peter |
| Actor | Lo strano mondo di Daisy Clover | 1965 | Walter Baines |
| Actor | My Friend Flicka | 1943 | Ken McLaughlin |
| Actor | Poker di sangue | 1968 | Nick Evers |
| Actor | Le chiavi del paradiso | 1944 | Francis Chisholm, as a boy |
| Actor | Hollywood Hollywood | 1976 | (archive footage) |
| Actor | Hart to Hart: Home Is Where the Hart Is | 1994 | Jeremy Sennet |
| Actor | Omicidio allo specchio | 1987 | Mr. Murray |
| Actor | ...E dopo le uccido | 1971 | Mr. Proffer |
| Actor | L'uomo laser | 1978 | Doctor Mellon |
| Actor | Charlie Chan e la maledizione della regina drago | 1981 | Gillespie |
| Actor | Cricket on the Hearth | 1967 | Criket Crocket Narrator |
| Actor | Hollywood Wives | Jason Swandle | |
| Actor | Scavenger Hunt | 1979 | Jenkins |
| Actor | Il caro estinto | 1965 | D.J.Jr. |
| Actor | Storie d'amore | 1995 | Amos Legrand |