Michael Emerson
- Man and Witch: The Dance of a Thousand Steps
2024 The Evil Wizard
- Elsbeth
2024 Milton Crawford
- Fallout
2024 Wilzig
- My Adventures with Superman
2023 Brainiac (voice)
- Glimpse
2022 Reg
- The Name of the Rose
2019 Abo of Fossanova - The Abbot
- Evil
2019 Dr Leland Townsend
- The Mystery of Matter: Search for the Elements
2015 Narrator
- Mozart in the Jungle
2014 Morton Norton
- Batman: The Dark Knight Returns, Part 2
2013 Joker (voice)
- Batman: The Dark Knight Returns
2013 Joker (voice)
- In Bloom
2013 Co-Producer
- Batman: The Dark Knight Returns, Part 1
2012 Joker (voice)
- Arrow
2012 Cayden James
- Ben 10 / Generator Rex: Heroes United
2011 Alpha Nanite (voice)
- Person of Interest
2011 Harold Finch
- Goldstar, Ohio
2010 Steve Harper
- Saw 3D
2010 Zep Hindle (archive footage) (uncredited)
- The New Man in Charge
2010 Benjamin Linus
- Parenthood
2010 Andy Fitzgerald
- G.I. Joe: Renegades
2010 Dr. Archibald Monev/Dr. Venom (voice)
- Ready? OK!
2008 Charlie New
- Jumping Off Bridges
2006 Frank Nelson
- The Legend of Zorro
2005 Harrigan
- Full Disclosure Report
2005 Zep Hindle
- 29th and Gay
2005 Gorilla
- The Inside
2005 Marty Manning
- Saw
2004 Zep Hindle
- Straight-Jacket
2004 Victor
- Lost
2004 Benjamin Linus
- Whoopi
2003 F. Thomas Erickson
- The Laramie Project
2002 Reverend
- Unfaithful
2002 Josh
- Without a Trace
2002 Stuart Wesmar
- Law & Order: Criminal Intent
2001 Gerry Rankin
- The District
2000 Man in Bar
- I'll Take You There
1999 Tom
- For Love of the Game
1999 Gallery Doorman
- Law & Order: Special Victims Unit
1999 Allan Shaye
- Stark Raving Mad
1999 Mr. Putnam
- Playing by Heart
1998 Bosco
- Grace & Glorie
1998 Arnold Dudley
- The Impostors
1998 Burtom's Assistant
- The Journey
1997 Michael
- The Practice
1997 William Hinks
- The X-Files
1993 Oliver Martin
- Orpheus Descending
1990 Clown
- Hallmark Hall of Fame
1951 Arnold Dudley
