Gregory Martin Itzin (April 20, 1948 – July 8, 2022) was an American character actor of film and television, perhaps best known for his role as Charles Logan in the action thriller series 24.
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Original Sin
As Colonel Worth
Fear and Loathing in Las Vegas
As Mint Hotel Clerk
The Ides of March
As Jack Stearns
The Other Fellow
As James Bond
Law Abiding Citizen
As Warden Iger
I Know Who Killed Me
As Dr. Greg Jameson
Drive Like Lightning
Float
As Ray Fulton
Life or Something Like It
As Dennis
Room 731
As Doctor Stanton
Forfeit
Donato and Daughter
As Cornell
L.A., I Hate You
As George
That Guy... Who Was in That Thing
As Self
One Last Flight
The Day Lincoln Was Shot
As Mr. Crook
DC 9/11: Time of Crisis
As John Ashcroft
The Change-Up
As Flemming Steel
Grandma's Last Wish
As Newton (as Greg Itzin)
How to Get Revenge
As Officer P.F.
Lincoln
As Judge John A. Campbell
Evolution
As Cartwright
What's Cooking?
As James Moore
Murder in Texas
As Newsman
Moment of Truth: Stalking Back
As Rick Boyer
Born to Be Wild
As Walter Mallinson
Airplane II: The Sequel
As Young Man (uncredited)
Sensitivity Training
As Barry
Adaptation.
As Prosecutor
Small Time
As Lennie
Friends 'Til The End
As Mr. Romley
The Fabulous Baker Boys
As Vince Nancy
$30
As Dad
Thornwell
As Polygraph Tester
Hard to Hold
As Owen
Carte Blanche
As Bob Sanders
Young Goodman Brown
As George Burroughs
Ice: The Movie
As Joe Grantham
Dark, Deadly & Dreadful
As Dr. Stanton (Room 731)
The Job
As Mr. D
The Best Little Whorehouse in Texas
As Melvin's Crew
Johnny Tsunami
As Headmaster Pritchard
Carly's Web
That Guy... Who Was In That Thing 3: Trek Stars
As Self
Teen Wolf
As English Teacher
Dad
As Ralph Kramer
Airplane!
As Religious Zealot #1
The Other Woman
As Mario
The Hunt for the Unicorn Killer
Medium
As Senator Jed Garrity
St. Elsewhere
Falcon Crest
As Dr. Horatio Bitters
L.A. Law
As D.D.A. Jack Angeletti
Murder, She Wrote
As Ralph Brewer
Arliss
Tales from the Darkside
As Newton
Medical Investigation
As Howard Lewson
Star Trek: Enterprise
As Captain Sopek
The Tony Danza Show
As Self
CSI: Crime Scene Investigation
As Norman Stirling
21 Jump Street
As Principal Jack Garner
The A-Team
As Howard
Fame
Beverly Hills, 90210
Judging Amy
As ASA Ethan Donahue
Friends
As Theodore Hannigan
Matlock
The Pretender
As Phil Campbell
Early Edition
Crossing Jordan
As Andrew Helm
24
As Charles Logan
Murder One
As D.A. Roger Garfield
Charlie's Angels
As Waiter
Strip Mall
As Sergei
Scarecrow and Mrs. King
Hill Street Blues
Hotel
Knots Landing
As Val's Lawyer
Major Dad
Profiler
Quantum Leap
As Sam Phillips
The O.C.
As Stephen Herbert
Eerie, Indiana
The Practice
As U.S. Attorney Al Daly
Millennium
Hannah Montana
As William Harris
NCIS
As Director Charlie
Jake and the Fatman
Voyagers!
The Mentalist
As Virgil Minelli
Hunter
As Charlie Latimer
The Lyon's Den
Chicago Hope
ER
As Burn Doctor
Boston Legal
As A.D.A. Todd Milken
Over My Dead Body
Diagnosis: Murder
As Andrew King
Dark Justice
The Nutt House
Something Wilder
As Jack Travis
The Michael Richards Show
As Matty Stillman
Jesse Hawkes
Once Upon a Time
As Alphonse Frankenstein
The West Wing
As State Dept. Representative
The Client
As George Sherman
Star Trek: Voyager
As Dr. Dysek
Wolf Lake
As Gerald Carter
Firefly
As Magistrate Higgins
American Playhouse
As Goldsmith
The Center Seat: 55 Years of Star Trek
As Self
Street Hawk
As Harvey
Star Trek: Deep Space Nine
As Ilon Tandro
Night Court
As Warren Karr
Murphy Brown
As Gil Porter
Brother's Keeper
As Mr. Weaver
The Hunt For The Unicorn Killer
The Resident
As Sunflower
MacGyver
As Tom Cavanaugh
JAG
As Lawrence Culbertson
Desperate Housewives
As Dick Barrows
Without a Trace
As Sydney's Co-Worker
Empty Nest
As Frank
Dave's World
As Alvin
Suddenly Susan
As Bob
Caroline in the City
As Mr. Lepner
Coach
As Tom
V.I.P.
As Ronnie Beeman
Tony Awards
As Self - Nominee
Family Law
As Mr. Allero