Denis Leroy Arndt (February 23, 1939 – March 25, 2025) was an American actor, best known for his starring role as Alex Priest in the play Heisenberg for which he earned a 2017 Tony Award nomination for Best Actor in a Play.

KNOWN FOR

Grey's Anatomy
2011
Supernatural
2007
CSI: Crime Scene Investigation
2002
24
2005
JAG
2003
Columbo
1990
The Practice
2000
Chicago Hope
1999
Murder, She Wrote
1990
Boston Legal
2006
Touched by an Angel
2000
L.A. Law
1990

FILMOGRAPHY

All
Movies
TV
Acting
74
2023
Do Over
as Lou
2018
How to Get Away with Murder
as Justice Strickland
2017
The Good Fight
as Ron
2014
Dolphin Tale 2
as Dennis
2011
Grey's Anatomy
as Colonel Daniel Robbins
2010
Shuffle
as Big boss
2010
Past Life
as Henry
2009
Tony Awards
as Self - Nominee
2007
Supernatural
as Father Reynolds
2006
Behind Enemy Lines II: Axis of Evil
as CIA Director Weylon Armitage
2006
Bandidas
as Ashe
2006
Boston Legal
as A.D.A. Joshua Wendt
2006
Vanished
as Senator Eugene Collins
2005
Last Best Chance
as Nathan Sheldon
2005
24
as Don Ashton
2004
Anacondas: The Hunt for the Blood Orchid
as CEO
2004
Sniper 3
as William Avery
2003
S.W.A.T.
as Sgt. Howard
2003
JAG
as Richard La Porte
2003
The Practice
as A.A.G. Quentin Reynolds
2003
Boston Public
as A.D.A. Roland Hill
2002
Dead Heat
as Ivan Barnes
2002
Undisputed
as Warden Lipscom
2002
CSI: Crime Scene Investigation
as Larry Maddox
2002
Providence
as Dr. Bill Augustine
2002
Providence
2001
Family Law
as Szabo
2000
Blast
as Sheriff
2000
The District
as Owen Mitchell
2000
The Practice
as Roland Hill
2000
Get Real
as Stewart Green
2000
Touched by an Angel
as Darrell
1999
Ally McBeal
as Michael Mannix
1999
Chicago Hope
as Jason Sollers
1999
Time of Your Life
1999
The Practice
as Defense Attorney Robertson
1998
Blackout Effect
as Frank Wyatt
1998
Max Q: Emergency Landing
as Don Mitchum
1997
NightScream
as Ray Ordwell
1997
Asteroid
as President
1997
Payback
as Neil Stanfill
1997
Metro
as Capt. Frank Solis
1997
The Pretender
as Nick Avani
1996
The Beast
as Osborne Manning
1996
The Burning Zone
1995
How to Make an American Quilt
as James
1995
The Return of Hunter: Everyone Walks in L.A.
as Frank Battaglia
1994
Amelia Earhart: The Final Flight
as Joseph Laughlin
1994
Tears and Laughter: The Joan and Melissa Rivers Story
as Jerry Werner
1994
seaQuest DSV
as Navy Quartermaster Bickle
1993
Boy Meets Girl
as Ted Jordan
1993
Lois & Clark: The New Adventures of Superman
as Dr. Sam Lane
1993
Bodies of Evidence
as Harris Devlin
1993
Picket Fences
as Franklin Dell
1992
Basic Instinct
as Lieutenant Walker
1992
Condition: Critical
as Dr. Austin DeGroose
1992
Cruel Doubt
as Leith Von Stein
1991
One Special Victory
as Jack Arner
1991
Herman's Head
as Russell Boswell
1990
L.A. Law
as Jack Sollers
1990
Murder, She Wrote
as Lt. Vincent Palermo
1990
Columbo
as Paul Mackey
1990
Life Goes On
1989
Mancuso, F.B.I.
1989
The Wonder Years
as Mr. Tyler
1989
Judith Krantz's Till We Meet Again
1988
Distant Thunder
as Larry
1988
Wiseguy
1988
Annie McGuire
1988
TV 101
as Officer Checker
1986
Crime Story
as Al Novak
1976
Dawn Flight
1974
Runaway on the Rogue River
as John Peterson
1974
The Wonderful World of Disney
as John Peterson