Self
The Center Seat: 55 Years of Star Trek (2021)
Teddy Chislington
Flynn Carson et les nouveaux aventuriers (2014)
Sardath (voice)
La Ligue des justiciers : Nouvelle génération (2010)
The Keeper (voice)
Legend of the Seeker, l’Épée de Vérité (2008)
Robert Pryce
Mad Men (2007)
Dexter (2006)
John Caulfield
Esprits criminels (2005)
Father Cullen
Philadelphia (2005)
Canton Delaware
Doctor Who (2005)
Old Canton Delaware
Merlin (voice)
La Ligue des justiciers (2001)
Clive Alpert
Preuve à l'appui (2001)
Town Elder
Gilmore Girls (2000)
Merrill
Charmed (1998)
Lead Jackal (voice)
La Famille Delajungle (1998)
Grave Digger
Poltergeist, les aventuriers du surnaturel (1996)
Maj. Viktor Lushov
JAG (1995)
Qatai
Star Trek : Voyager (1995)
Petros Xanatos (voice)
Gargoyles, les anges de la nuit (1994)
Dum Dum Dugan (voice)
Iron Man (1994)
The Soul Hunter
Babylon 5 (1994)
Warleader G'Sten
Dr. Tom Arneberg
Diagnostic : Meurtre (1993)
Lawrence Limburger (voice)
Les Motards de l'espace (1993)
Mr. Drake
Frasier (1993)
The Professor
Seaquest - Police des mers (1993)
Gooshie, the Miner
Code Quantum (1989)
Dr. Ira Graves
Star Trek : La nouvelle génération (1987)
Blank Reg
The Max Headroom Show (1987)
Designing Women (1986)
Dr. Zito
MacGyver (1985)
Gracchus 1 episode, 1985
A.D. - Anno Domini (1985)
Dr. Fredrick Grundberg
Arabesque (1984)
Mahaffy
Histoires Singulières (1984)
Bill's Father
The Day of the Triffids (1981)
Specz
Shōgun (1980)
Hospital Gardener
Hammer La Maison de tous les Cauchemars (1980)
John
Minder (1979)
Gorlois
The Legend of King Arthur (1979)
Mr. Smith
Out (1978)
Raymond Girard
Enemy at the Door (1978)
Malenski
Les Professionnels (1977)
Det. Chief Insp. Morrison
The Sweeney (1975)
Harry Cowper
Play for Today (1970)
In Memory Of