Gregory Itzin
- The Other Fellow
2023 James Bond
- Carte Blanche
2019 Bob Sanders
- Ice: The Movie
2018 Joe Grantham
- Dark, Deadly & Dreadful
2018 Dr. Stanton (Room 731)
- The Resident
2018 Sunflower
- Sensitivity Training
2016 Barry
- Room 731
2015 Doctor Stanton
- Small Time
2014 Lennie
- Star Trek: Enterprise - In a Mirror, Darkly
2014 Adm. Black
- Lincoln
2012 Judge John A. Campbell
- The Ides of March
2011 Jack Stearns
- L.A., I Hate You
2011 George
- The Change-Up
2011 Flemming Steel
- Once Upon a Time
2011 Alphonse Frankenstein
- VideoDome Rent-O-Rama
2010 Mr. Briggs
- Hawaii Five-0
2010 Alex Mackey
- Law Abiding Citizen
2009 Warden Iger
- The Job
2009 Mr. D
- Float
2008 Ray Fulton
- The Mentalist
2008 Virgil Minelli
- I Know Who Killed Me
2007 Greg Jameson
- Forfeit
2007
- Hannah Montana
2006 William Harris
- Big Love
2006 Senator Dwyer
- Medium
2005 Senator Jed Garrity
- Medical Investigation
2004 Howard Lewson
- Boston Legal
2004 A.D.A. Todd Milken
- Desperate Housewives
2004 Dick Barrows
- DC 9/11: Time of Crisis
2003 John Ashcroft
- The O.C.
2003 Stephen Herbert
- NCIS
2003 Director Charlie
- The Lyon's Den
2003
- Life or Something Like It
2002 Dennis
- Adaptation.
2002 Prosecutor
- Firefly
2002 Magistrate Higgins
- Without a Trace
2002 Sydney's Co-Worker
- For the People
2002 Judge Donald Kingman
- Original Sin
2001 Colonel Worth
- Evolution
2001 Cartwright
- Star Trek: Enterprise
2001 Captain Sopek
- Crossing Jordan
2001 Andrew Helm
- 24
2001 Charles Logan
- Wolf Lake
2001 Gerald Carter
- What's Cooking?
2000 James Moore
- CSI: Crime Scene Investigation
2000 Norman Stirling
- Strip Mall
2000 Sergei
- The Michael Richards Show
2000 Matty Stillman
- One Last Flight
1999
- $30
1999 Dad
- Johnny Tsunami
1999 Headmaster Pritchard
- Judging Amy
1999 ASA Ethan Donahue
- The West Wing
1999 State Dept. Representative
- Family Law
1999 Mr. Allero
- Fear and Loathing in Las Vegas
1998 Mint Hotel Clerk
- The Day Lincoln Was Shot
1998 Mr. Crook
- Brother's Keeper
1998 Mr. Weaver
- V.I.P.
1998 Ronnie Beeman
- Friends 'Til the End
1997 Mr. Romley
- The Practice
1997 U.S. Attorney Al Daly
- Innocent Victims
1996
- Arli$$
1996 Tom Gale
- The Pretender
1996 Phil Campbell
- Early Edition
1996 Bruce Bryce
- Profiler
1996 Joel Marks
- Millennium
1996 Hans Ingram
- Suddenly Susan
1996 Bob
- Born to Be Wild
1995 Walter Mallinson
- Murder One
1995 Roger Garfield
- The Client
1995 George Sherman
- Star Trek: Voyager
1995 Dr. Dysek
- JAG
1995 Lawrence Culbertson
- Caroline in the City
1995 Mr. Lepner
- Friends
1994 Theodore Hannigan
- Chicago Hope
1994 Kyle Mitchell
- ER
1994 Burn Doctor
- Something Wilder
1994 Jack Travis
- Party of Five
1994 School Psychologist
- Donato and Daughter
1993 Cornell
- Moment of Truth: Stalking Back
1993 Rick Boyer
- Young Goodman Brown
1993 George Burroughs
- Diagnosis: Murder
1993 Andrew King
- Star Trek: Deep Space Nine
1993 Ilon Tandro
- Dave's World
1993 Alvin
- Dark Justice
1991
- Eerie, Indiana
1991 The Mayor
- Civil Wars
1991 Tom Turnbull
- Beverly Hills, 90210
1990 Father Chris
- How to Get Revenge
1989 Officer P.F.
- The Fabulous Baker Boys
1989 Vince Nancy
- Dad
1989 Ralph Kramer
- Major Dad
1989
- Quantum Leap
1989 Sam Phillips
- The Nutt House
1989 Dennis
- Jesse Hawkes
1989
- Coach
1989 Tom
- Murphy Brown
1988 Gil Porter
- Empty Nest
1988 Frank
- Carly's Web
1987
- 21 Jump Street
1987 Principal Jack Garner
- Matlock
1986 Charlie Tuggle
- L.A. Law
1986 D.A. Jack Angeletti
- Teen Wolf
1985 English Teacher
- Street Hawk
1985 Harvey
- MacGyver
1985 Tom Cavanaugh
- Hard to Hold
1984 Owen
- Murder, She Wrote
1984 Ralph Brewer
- Tales from the Darkside
1984 Newton
- Hunter
1984 Charlie Latimer
- Night Court
1984 Warren Karr
- The Other Woman
1983 Mario
- The A-Team
1983 Howard
- Airplane II: The Sequel
1982 Young Man (uncredited)
- The Best Little Whorehouse in Texas
1982 Melvin's Crew
- St. Elsewhere
1982 Ving Shalimar
- Fame
1982
- Hotel
1982
- Voyagers!
1982
- American Playhouse
1982 Goldsmith
- Thornwell
1981 Polygraph Tester
- Falcon Crest
1981 Dr. Horatio Bitters
- Airplane!
1980 Religious Zealot #1
- Knots Landing
1979 Val's Lawyer
- Lou Grant
1977 Young Reporter
- Charlie's Angels
1976 Waiter
