(1992) Basic Instinct

as Internal Affairs Investigator

(1998) The X-Files

as Assistant Director Walter Skinner

(1988) Return of the Living Dead Part II

as Sarge

(2008) The X Files: I Want to Believe

as Walter Skinner

(1989) Shocker

as Horace Pinker

(1987) Three O'Clock High

as Duke Herman

(2008) Recount

as Bill Daley

(2007) Man in the Chair

as Floyd

(1987) Death Wish 4: The Crackdown

as Lab Foreman

(2010) Woodshop

as Miller

(2003) First to Die

as Warren Jacobi

(1998) Legion of Fire: Killer Ants

as Police Chief Jeff Croy

(2011) Mega Cyclone

as Gunter MacGregor

(2022) Desert Shadows

as Professor Charles M. Ridley

(1984) On the Line

as Stephens

(2001) Conspiracy Theory: Did We Land on the Moon?

as Narrator

(1982) Mongrel

as Woody

(1998) Inside The X-Files

as Self

(2008) Flash of Genius

as Macklin Tyler

(1991) Knight Rider 2000

as Thomas J. Watts

(1993) Trouble Shooters: Trapped Beneath the Earth

as Thompson

(1987) U.S. Marshals: Waco & Rhinehart

as Gate AP

(1986) Dalton: Code of Vengeance II

as Verbeck

(1996) Raven Hawk

as Carl Rikker

(2015) The Girl in the Photographs

as Sheriff Porter

(2000) Gun Shy

as Dexter Helvenshaw

(1994) Dangerous Touch

as Vince

(2017) Transformers: The Last Knight

as TRF Group Leader

(1987) 3 On a Match

as Bull Tully

(1990) Night Visions

as Captain Keller

(2019) Polaroid

as Sheriff Thomas Pembroke

(1988) Brothers in Arms

as Caleb

(2009) Xtra Credit

as John Weller

(1991) Guilty As Charged

as Dominique

(1995) Vampire in Brooklyn

as Tony the Hitman

(2021) American Traitor: The Trial of Axis Sally

as John Kelly

(2009) Stargate Atlantis: Fans' Choice

as Steven Caldwell

(2005) Medium

as Dan Burroughs

(1998) That '70s Show

as Bull

(1981) Falcon Crest

as Saunder's Henchman

(1999) Batman Beyond

as Dr. Stanton (voice)

(2008) Sons of Anarchy

as Ernest Darby

(2009) Castle

as Hans Brauer

(2006) Brothers and Sisters

as Browne Carter

(2000) CSI: Crime Scene Investigation

as Happy Harry Desmond

(1983) The A-Team

as Paul Winkle

(2005) Supernatural

as Samuel Campbell

(2003) Tarzan

as Richard Clayton

(2004) The Batman

as Commissioner Gordon (voice)

(2003) Nip/Tuck

as ---

(1999) Law & Order: Special Victims Unit

as Jack Hammond

(2021) Walker

as Bonham Walker

(1993) The X-Files

as Walter Skinner

(1989) Alien Nation

as ---

(2001) The Lone Gunmen

as Walter Skinner

(2008) Breaking the Magician's Code: Magic's Biggest Secrets Finally Revealed

as Narrator (voice)

(2007) Reaper

as ---

(1994) ER

as Terry Waters

(2004) Boston Legal

as U.S. Attorney Mark Freestone

(2008) In Plain Sight

as ---

(1978) Dallas

as Morrisey

(2004) The Mountain

as Colin Dowling

(2012) Dallas

as Harris Ryland

(2002) Birds of Prey

as Al Hawke

(2004) Stargate Atlantis

as Steven Caldwell

(1999) The West Wing

as Senator Dresden

(2018) The Rookie

as Rex

(1993) The X-Files

as Walter Skinner / SS Sturmbannfuehrer

(2005) Grey's Anatomy

as Lawrence Jennings

(2011) Against the Wall

as Randall

(2005) Supernatural

as Samuel Campbell / Shapeshifter

(2012) The Finder

as Eddie Ross

(1991) Roc

as White Officer

(2004) The Batman

as Gordon (voice)

(2006) Day Break

as Detective Spivak

(2005) Grey's Anatomy

as Larry Jennings

(2011) American Horror Story

as Art

(2015) Supergirl

as Rama Khan

(2008) Leverage

as Colin Saunders

(2020) Helstrom

as Papa

(1981) Falcon Crest

as Eddie

(2003) NCIS

as Wynn Crawford

(1990) Get a Life

as Max

(2008) Breaking the Magician's Code: Magic's Biggest Secrets Finally Revealed

as Presenter / Narrator