Cast & creator
William O'Leary
Best known for NCIS, Shameless, NCIS: Los Angeles
Also known as: William O’Leary
18
film credits
28
television credits
46
1984–2016 · acting roles
6.6
average across scored titles
Signature credits
Known for
Across film & television
Filmography (46)
Showing 46 of 46 credits
NCIS
Martin Freydano
2003
Shameless
Sgt. Rucker
2011
NCIS: Los Angeles
Harry Zinetti
2009
24
Sid Paulson
2001
The X-Files
Gas Station Man
1993
CSI: Miami
Stewart Otis
2002
The West Wing
Fish and Wildlife Deputy
1999
Rizzoli & Isles
Worster
2010
Chicago Hope
Mr. Loey
1994
Bosch
Vincent Ackles
2015
Numb3rs
Roland Haldane
2005
Sabrina, the Teenage Witch
Policeman (uncredited)
1996
Without a Trace
Carey Chase
2002
Home Improvement
Marty Taylor
1991
Murder, She Wrote
Hank Duncan
1984Murder, She Wrote
FBI Agt. Ed Crider
1984
Miami Vice
Scotty
1984
Matlock
Paul McBride
1986
The Guardian
Brad Fulton
2001
The District
Don Hardin
2000
Big Love
Ronny
2006
American Dreams
2002
Dear John
Ben Conners
1988
Terminator 3: Rise of the Machines
Mr. Smith
2003
Law & Order: LA
Joe Laight
2010
Tremors
George Meadows
2003
Love Bites
Ty
2011
Miracles
Alan
2003
Hot Shots!
Pete 'Dead Meat' Thompson
1991
Kamen Rider: Dragon Knight
Xaviax
2008
Miss Congeniality 2: Armed and Fabulous
Agent Jenkins
2005
Bull Durham
Jimmy
1988
Project: ALF
Capt. Rick Mullican
1996
Candyman: Farewell to the Flesh
Ethan Tarrant
1995
Mad City
CTN Junior Executive
1997
The Enemy Within
Lt. William Dorsett
1994
Walker
James Walker
1987
Nice Girls Don't Explode
Andy
1987
A Time to Revenge
Lyle Whittmar
1997
Flight of Black Angel
Capt. Eddie Gordon
1991
Is That a Gun in Your Pocket?
Sam Graves
2016
Lost Angels
Link
1989
In the Line of Duty: Ambush in Waco
Adrian
1993
Daybreak
Head of Security
2000
Moola
Mickey Fish
2007Elvis Has Left the Building
Danny
1999