2008		Rosamunde Pilcher's Four Seasons (4 episodes) as Stephen Combe
2008		Star Wars: The Clone Wars (2 episodes) as Dr. Nuvo Vindi (voice)

2006

(1 episode) as Self (uncredited) (1 episode) as Self

2005		How I Met Your Mother (1 episode) as Jefferson Van Smoot
2005		Frederick Forsyth's Icon (1 episode) as Sir Nigel Irvine

2004		Justice League Unlimited (1 episode) as Ares / Mr. Sera (voice)
2004		The Lady Musketeer (2 episodes) as D'Artagnan

2002

(1 episode)

2001

(1 episode) as Bernard Fremont

2000		Founding Fathers (4 episodes) as Alexander Hamilton (voice) / Thomas Paine (voice)
2000		Curb Your Enthusiasm (4 episodes) as Michael York
2000		Gilmore Girls (4 episodes) as Asher Fleming

1999		Family Guy (1 episode) as Documentary Speaker (voice)
1999		Magic and Beyond (26 episodes) as Host

1997

(2 episodes) as Lewis Lawshe

1996		The Great War and the Shaping of the 20th Century (1 episode) as Robert Graves / Harold Owen (voice)
1996		The Ring (2 episodes) as Walmar von Gotthard
1996		Superman: The Animated Series (2 episodes) as Kanto (voice)
1996		September (2 episodes) as Edmund

1995		The Naked Truth (1 episode) as Leland Banks
1995		Sliders (1 episode)

1994		The Magic School Bus (1 episode) as (voice)
1994		Babylon 5 (2 episodes) as David 'Arthur' McIntyre

1993

(3 episodes) as President Alexander Bourne

1992

(1 episode) as Dr. Montague Kane (voice) (1 episode) as Vertigo (voice)

1989		The Simpsons (1 episode) as Nigel (voice) (3 episodes) as Dr. Lionel Budgie (voice) (1 episode) as Mason Fairbanks (voice) (1 episode) as Clayton (voice)
1989		Judith Krantz's Till We Meet Again (2 episodes)

1988

(4 episodes) as Desmond Jordan

1987

(2 episodes) as Carl Zlinter

1985		Tall Tales & Legends (1 episode) as Ponce de Leon
1985		Space (5 episodes) as Dieter Kolff
1985		Au nom de tous les miens (8 episodes) as Martin Gray

1981

(1 episode) as Self

1979

(10 episodes) as Charles Scott

1977		Weekend Special (2 episodes) as King Sarastro (voice)
1977		Jesus of Nazareth (4 episodes) as John the Baptist

1967

(3 episodes) as Jolyon 'Jolly' Forsyte

1965		The Wild Wild West (1 episode)
1965		Gidget (1 episode)

1963

(1 episode)

1951

(1 episode) as James Durie, Henry's older brother