| movie | Dreams (2025) | (Not seen) |
| movie | Sleeping Beauty (2014)As The Narrator | (Not seen) |
| movie | Transformers: Revenge of the Fallen (2009) (AKA "Prime Directive")As Prime #1 (voice) | (Not seen) |
| tv | Star Wars: The Clone Wars (2008)As Dr. Nuvo Vindi (voice)(2 episodes) | (Not seen) |
| tv | Ben 10: Alien Force (2008)As Patrick (voice)(1 episode) | (Not seen) |
| tv | How I Met Your Mother (2005)As Jefferson Van Smoot(1 episode) | (Not seen) |
| tv | Justice League Unlimited (2004)As Ares / Mr. Sera (voice)(1 episode) | (Not seen) |
| movie | Winnie the Pooh: A Very Merry Pooh Year (2002)As Narrator (voice) | (Not seen) |
| movie | Austin Powers in Goldmember (2002) (AKA "Austin Powers 3")As Basil Exposition | (Not seen) |
| movie | In Search of Peace (2001)As Chaim Herzog (voice) | (Not seen) |
| tv | Curb Your Enthusiasm (2000)As Michael York(4 episodes) | (Not seen) |
| tv | Gilmore Girls (2000)As Asher Fleming(4 episodes) | (Not seen) |
| movie | Borstal Boy (2000)As Joyce | (Not seen) |
| movie | The Omega Code (1999) (AKA "The Code")As Alexander Stone | (Not seen) |
| movie | Austin Powers: The Spy Who Shagged Me (1999) (AKA "Austin Powers 2")As Basil Exposition | (Not seen) |
| movie | A Knight in Camelot (1998)As King Arthur | (Not seen) |
| movie | Babylon 5: In the Beginning (1998) (AKA "Babylon 5: Last of the Fallen")As David 'Arthur' McIntyre (arcive footage, uncredited) | (Not seen) |
| movie | 54 (1998) (AKA "Fifty-Four")As Ambassador | (Not seen) |
| movie | Wrongfully Accused (1998)As Hibbing Goodhue | (Not seen) |
| movie | Austin Powers: International Man of Mystery (1997) (AKA "Austin Powers")As Basil Exposition | (Not seen) |
| movie | The Celluloid Closet (1995) | (Not seen) |
| movie | TekWar: TekLab (1994)As Richard Stewart | (Not seen) |
| movie | Wide Sargasso Sea (1993)As Paul Mason | (Not seen) |
| movie | The Long Shadow (1992) | (Not seen) |
| tv | The Simpsons (1989)As Clayton (voice)(6 episodes) | (Not seen) |
| movie | The Return of the Musketeers (1989)As D'Artagnan | (Not seen) |
| tv | Secret of the Sahara (1988) (AKA "The Secret of the Sahara")As Desmond Jordan(4 episodes) | (Not seen) |
| movie | Sword of Gideon (1986)As Robert | (Not seen) |
| movie | The Last Remake of Beau Geste (1977)As Beau Geste | (Not seen) |
| movie | The Island of Dr. Moreau (1977)As Andrew Braddock | (Not seen) |
| movie | Logan's Run (1976)As Logan | (Not seen) |
| movie | Great Expectations (1974)As Pip | (Not seen) |
| movie | The Four Musketeers: Milady's Revenge (1974) (AKA "The Four Musketeers")As D'Artagnan | (Not seen) |
| movie | Murder on the Orient Express (1974)As Count Andrenyi | (Not seen) |
| movie | The Three Musketeers (1973)As D’Artagnan | (Not seen) |
| movie | Cabaret (1972)As Brian Roberts | (Not seen) |
| movie | Justine (1969)As Darley | (Not seen) |
| movie | Romeo and Juliet (1968) (AKA "William Shakespeare's Romeo and Juliet")As Tybalt | (Not seen) |
| movie | The Taming of The Shrew (1967)As Lucentio | (Not seen) |