Cast & creator
David Clennon
Best known for The Mentalist, Grey's Anatomy, NCIS
From Wikipedia, the free encyclopedia David Clennon (born May 10, 1943) is an American actor perhaps best known for his portrayal of Miles Drentel in the ABC series Thirtysomething, a role he reprised on Once and Again. Clennon was born in Waukegan, Illinois, the son of Virginia, a homemaker, and Cecil Clennon, an accountant. Clennon is well known for his political activism. In 1980, David Clennon provided the voice for Admiral Motti in NPR's Star Wars The Original Radio Drama. He was a regular on the TV shows Almost Perfect, The Agency and Saved. Most recently, Clennon played Carl Sessick (a.k.a Carl the Watcher) on Ghost Whisperer. In 1993 he won an Emmy award for his guest appearance on the series Dream On. Description above from the Wikipedia article David Clennon, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Also known as: Dave Clennon
83
film credits
50
television credits
131
1951–2026 · acting roles
6.8
average across scored titles
Signature credits
Known for
Across film & television
Filmography (133)
Showing 133 of 133 credits
The Mentalist
Judge Dellinger
2008
Grey's Anatomy
Jack Shandley
2005
NCIS
Max Ellswood
2003
Prison Break
Conrad Dallow
2005
The West Wing
Jim
1999
Star Trek: Voyager
Dr. Crell Moset
1995
Scrubs
Dr. Turner
2001
Ghost Whisperer
Carl Sessick
2005
ER
Jared Morgan
1994
Great Performances
Medvedenko
1971
Murder, She Wrote
Wilton Tibbles
1984
Numb3rs
Mel Oliver
2005
Crossing Jordan
Charles Gibson
2001
Strong Medicine
Judge
2000
Boston Legal
Attorney Braxton Mason
2004
Weeds
Charles
2005
House of Cards
Ted Havemeyer
2013
Barney Miller
Bodhisattva
1975Barney Miller
Jeffrey Stevens
1975Barney Miller
Howard Weckler
1975Barney Miller
Howard Speer
1975Barney Miller
Justice Department Counsel Chester Monahan
1975
Gone Girl
Rand Elliott
2014
The New Alfred Hitchcock Presents
Professor John Tate
1985
NewsRadio
Judge
1995
Close to Home
Arthur Stanton
2005
Family Law
Andrew Weller
1999
Just Shoot Me!
Martin Spancer
1997
Cybill
Barry
1995
Kojak
George Martin
1973
Joan of Arcadia
Health Spa Owner
2003
thirtysomething
1987
The Agency
Joshua Nankin
2001
The Thing
Palmer
1982
Dream On
Peter Brewer
1990
Creepshow
Calvin (segment "Doodles")
2019
From the Earth to the Moon
Dr. Lee Silver
1998
Sledge Hammer!
Harold Bell
1986
Once and Again
1999
WKRP in Cincinnati
Norris Breeze
1978
LAX
Ralph Gravis
2004
October Road
2007
Almost Perfect
Neal Luder
1995
Vacation
Harry Co-Pilot
2015
Flags of Our Fathers
White House Official
2006
Mission Hill
1999
The Philanthropist
2009
The Right Stuff
Liaison Man
1983
Maximum Bob
Nathan Cahill
1998
Hallmark Hall of Fame
James Fitzpatrick
1951
Being There
Thomas Franklin
1979
Extraordinary Measures
Dr. Renzler
2010
Playing by Heart
Martin (uncredited)
1998
Syriana
Donald
2005
Saved
Dr. Martin Cole
2006
And the Band Played On
Mr. Johnstone
1993
Falling in Love
Brian Gilmore
1984
J. Edgar
Senator Friendly
2011
The Good Doctor
Dr. Harbison
2011
Man Trouble
Lewie Duart
1992
Legal Eagles
Blanchard
1986
Gray Lady Down
USS Neptune Crewmember
1978
Light Sleeper
Robert
1992
Mad City
Street Preacher
1997
Blood & Orchids
Phillip Murray
1986
Bound for Glory
Carl
1976
Helter Skelter
Harry Jones
1976
The Thing Expanded
Self
2026
Farmed and Dangerous
Bob Sears
2014
Coming Home
Tim
1978
Star 80
Martin "Geb" Gebber
1983
Mr. Jones
The Curator
2013
Matinee
Jack
1993
Grace of My Heart
Dr. "Jonesy" Jones
1996
Betrayed
Jack Carpenter
1988
The Paper Chase
Toombs
1973
Missing
Consul Phil Putnam
1982
The Couch Trip
Lawrence Baird
1988
Go Tell the Spartans
Lt. Finley Wattsberg
1978
The Greatest
Captain
1977
The Escape Artist
Newspaper Editor
1982
Black Widow Murders: The Blanche Taylor Moore Story
Dwight Moore
1993
Tecumseh: The Last Warrior
William Henry Harrison
1995Park Place
1981
Hide in Plain Sight
Richard Fieldston
1980
Downtown
Jerome Sweet
1990
The Agency
Joshua Nankin
2003
Ladies and Gentlemen, the Fabulous Stains
Dave Robell
1982
Gideon's Trumpet
James Fitzpatrick
1980
Life of the Party
Jack
2005
Panic in Echo Park
1977
He's My Girl
Mason Morgan
1987
Reward
Steve Rawlin
1980
Silver City
Mort Seymour
2004
The Trouble with Dick
Lars
1987
Conspiracy: The Trial of the Chicago 8
Richard Schultz
1987
Nurses on the Line: The Crash of Flight 7
Dr. Rulon Beesley
1993
Crime Club
Peter Karpf
1975
Sweet Dreams
Randy Hughes
1985
The Thing: Terror Takes Shape
Self
1998The Thing: Terror Takes Shape
Thanks
1998
The 11th Green
Peaches
2020
Beauty and the Beast
Cullen
1987
The Panama Deception
Thanks
1992
Best Kept Secrets
Rev. Warner
1984
Welcome to the Men's Group
2016
Hanna K.
Ammon
1983
Marriage Is Alive and Well
David
1980
Special Bulletin
Bruce Lyman
1983
The Image
Dr. Sigmond Grampton
1990
The Day the Bubble Burst
1982
Saving Sarah Cain
Homeless Man
2007
Constellation
Bear
2007
Lars Shrike Walks The Night
Richard Kendred
2024
The Sound
Kurt
2025
The Staircase
Simon Filger
19981945A
General
2010
Dr. Del
Mr. Stone
2016
On the Yard
Psychiatrist
1978
Billy in the Lowlands
Social Worker
1979
Reversion
Ciespy
2015
The Visit
Parole Board Member Brenner
2001
The Men of Outpost 31
Self
2016
The Migrants
Tom Trimpin
1974
Ghost Phone
Hamilton Pierce
2013
Breaking Out
Boss
2010
Two Crimes
Jim
1995
Danger in Paradise
Hobart
1977Days with Dandekar
The Seagull
Medvedenko
1975
Amigo Undead
Old Man Schumer
2015
Original Sins
Jimbo
1995
Story Theatre
Ensemble Member
1969