Donald Mallard
NCIS: New Orleans (2014)
The Problem Solverz (2011)
Professor Paradox (voice)
Ben 10: Ultimate Alien (2010)
Merlin (voice)
Batman: The Brave and the Bold (2008)
Self
The One Show (2006)
C.A.R. (voice)
The Replacements (2006)
Dr. Donald 'Ducky' Mallard
NCIS (2003)
The Education of Max Bickford (2001)
Deadline (2000)
Duncan
Sex and the City (1998)
Billy Fawcett
Coming Home (1998)
JAG (1995)
Joshua Hayward
The Outer Limits (1995)
Dr. Joseph Bloom
VR.5 (1995)
Narrator
Titanic (1994)
Dr. Vance Hendricks
Babylon 5 (1994)
Frank Cobb
seaQuest DSV (1993)
Cooper
Heartbeat (1992)
Bernard Dimes
Lucky Chances (1990)
Craig Holland
Law & Order (1990)
Professor Plum
Cluedo (1990)
Alex Vesey
Mother Love (1989)
Sir Robert
Father Dowling Mysteries (1989)
The Feverman
Monsters (1988)
Philip Dudley
Matlock (1986)
Lieutenant Cavanaugh
The New Alfred Hitchcock Presents (1985)
Cyril Grantham
Murder, She Wrote (1984)
Drew Garrison
Frank Lane
Hammer House of Mystery and Suspense (1984)
Ivan Tregorin
The A-Team (1983)
Wogan (1982)
Geoffrey Atterton
Hart to Hart (1979)
Steel
Sapphire & Steel (1979)
Alan Breck Stewart
Kidnapped (1978)
Dr. Daniel Westin
The Invisible Man (1975)
Dr. Henri Clerval
Frankenstein: The True Story (1973)
Flt. Lt. Simon Carter
Colditz (1972)
Dr. Joel Winter
Night Gallery (1970)
Brian Kenny
Marcus Welby, M.D. (1969)
Illya Kuryakin
Please Don't Eat the Daisies (1965)
John Adams
Profiles in Courage (1964)
Vergißmeinnicht (1964)
The Man from U.N.C.L.E. (1964)
Capt. Hanning
The Great Adventure (1963)
Gwyllm Griffiths
The Outer Limits (1963)
Tone Hobart
The Tonight Show Starring Johnny Carson (1962)
The Mike Douglas Show (1961)
Lord Oakeshott
Sir Francis Drake (1961)
Frank Churchill
Emma (1960)
Eugene Wrayburn
Our Mutual Friend (1958)
Phillipe Bertain
Perry Mason (1957)
Jimmy MacGrath
Armchair Theatre (1956)
Hamilton Cade
Hallmark Hall of Fame (1951)
Kenneth Canfield