2021		And Just Like That… (2 episodes) as Mark Kasabian
2021		Family Law (30 episodes) as Harry Svensson

2020		Power Book II: Ghost (4 episodes) as Simon Stern
2020		Stars in the House (1 episode) as Self

2019		Titanic: Stories from the Deep (4 episodes) as Himself
2019		Tales of the City (7 episodes) as Samuel Garland

2017

(13 episodes) as Admiral Halsey

2016

(1 episode) as Narrator (voice) (42 episodes) as Dr. Martin Stein / Firestorm

2015		Supergirl (1 episode) as Dr. Martin Stein
2015		The Slap (8 episodes) as Narrator (voice)
2015		Schitt's Creek (1 episode) as Clifton Sparks

2014		The Flash (1 episode) as Prof. Martin Stein (voice) (1 episode) as Digsy's Husband (10 episodes) as Dr. Martin Stein
2014		Power (16 episodes) as Simon Stern

2013		Sleepy Hollow (1 episode) as Mr. Crane
2013		Motive (4 episodes) as Neville Montgomery
2013		Deception (11 episodes) as Robert Bowers

2012		Arrow (1 episode) as Martin Stein
2012		The Firm (1 episode) as Judge Dominic

2011		Charlie's Angels (7 episodes) as Charles Townsend (voice)
2011		Web Therapy (14 episodes)
2011		Suits (1 episode) as Philip

2010		Law & Order: LA (1 episode) as Walter Calvin
2010		Republic of Doyle (4 episodes) as Garrison Steele

2009		Everything She Ever Wanted (4 episodes) as Walter Allanson
2009		Stargate Universe (1 episode) as Ambassador Ovirda
2009		Modern Family (1 episode) as Chef Dumont
2009		Watch What Happens Live with Andy Cohen (2 episodes) as Self - Guest
2009		Glee (1 episode) as Mr. Schuester
2009		The Last Templar (2 episodes) as Monsignor De Angelis

2008		Web Therapy (8 episodes) as Kip Wallice
2008		Eli Stone (26 episodes) as Jordan Wethersby

2007

(2 episodes) as Bennett Herreshoff

2006		30 Rock (1 episode) as Eugene Gremby
2006		Ugly Betty (1 episode) as Professor Barrett
2006		Justice (13 episodes) as Ron Trott

2005

(1 episode) as Self

2001		Alias (105 episodes) as Jack Bristow
2001		Life with Judy Garland: Me and My Shadows (2 episodes) as Sid Luft

1998

(1 episode) as Peter Bovington

1997		Liberty! (6 episodes) as John Dickinson
1997		The Wonderful World of Disney (1 episode)
1997		The View (1 episode) as Self

1996

(1 episode) as Andrew Price

1995		Almost Perfect (1 episode)
1995		The Outer Limits (1 episode) as Dr. Edward Normandy (1 episode) as Dr. Ben McCormick

1993		Frasier (1 episode) as Ferguson
1993		Kung Fu: The Legend Continues (1 episode) as Blackwell

1990

(1 episode) as Paul Sandig

1989

(1 episode) as Michael de Graaf (voice)

1987

(10 episodes) as Dennis Widmer

1985		The Twilight Zone (1 episode)
1985		I Had Three Wives (6 episodes) as Jackson Beaudine

1984

(1 episode) as Ambrose Cavender

1981

(1 episode) as Self

1971

(1 episode) as Arthur

1956

(1 episode) as Self - Nominee/Performer

1951

(1 episode) as General Lafayette