7.6
NCIS
2003· TV Series
John O'Brien
Acting
Biography
No biography available for John O'Brien.
Known For
Top
8.2
Grey's Anatomy
2005· TV Series
Top
8.2
Shameless
2011· TV Series
Top
8.3
Criminal Minds
2005· TV Series
Top
8.4
Friends
1994· TV Series
Top
8.0
S.W.A.T.
2017· TV Series
7.9
Desperate Housewives
2004· TV Series
Top
8.5
Malcolm in the Middle
2000· TV Series
7.4
Two and a Half Men
2003· TV Series
Top
8.4
The X-Files
1993· TV Series
Top
8.2
9-1-1
2018· TV Series
7.9
Monk
2002· TV Series
Filmography
- 2022MovieCheaper by the Dozenas Principal
- 2021MovieThis Game's Called Murderas Man in Suit
- 2021TVHacksas Duncan
- 2020TVPerry Masonas Ernie Magnuson
- 2019TVBob Hearts Abisholaas James
- 2018TVDirty Johnas Cameron Scott
- 2018TVLight as a Featheras Reverend Fahey
- 2018TV9-1-1as Rod Billings
- 2017TVS.W.A.T.as Weber
- 2016MovieThe Last Heistas Manager Mark
- 2015TVSuperstoreas Mike
- 2014TVTransparentas Professor
- 2014TVYoung & Hungryas Mr. Klepfer
- 2013TVThe Crazy Onesas Larry
- 2013TVMomas Waiter
- 2012TVThe Mindy Projectas Dr. Jones
- 2012TVDon't Trust the B---- in Apartment 23as Tom
- 2012MovieBeing Flynnas Airline Pilot
- 2011TVAustin & Allyas Mr. Neidermeyer
- 2011TVWorkaholicsas Doctor
- 2011TVShamelessas Father Monroe
- 2010TVLaw & Order: LAas Scott Hancox
- 2010TVBetter With Youas Florist
- 2010TVPretty Little Liarsas Principal Hackett
- 2010TVVictoriousas Mr. Mooney
- 2009TVCommunityas Chaplin
- 2008TVEleventh Houras Manager
- 2008TVThe Middlemanas Newscaster
- 2007TVChuckas Older CIA Tech
- 2007TVMad Menas Phil Kennedy
- 2006MovieFlickaas Mr. Masterson
- 2006TVUgly Bettyas Joe of Happy Homes
- 2005TVCriminal Mindsas Dr. Meyer
- 2005TVGrey's Anatomyas Lab Tech Jeffrey
- 2005TVMediumas Hotel Clerk
- 2004TVDesperate Housewivesas Dr. Wheeler
- 2004TVBoston Legalas Clerk #2
- 2003TVNCISas Bruce
- 2003TVTwo and a Half Menas Waiter
- 2002TVLess than Perfectas Executive
- 2002TVWhat I Like About Youas Dr. Thompson
- 2002TVWhat I Like About Youas Minister
- 2002TVMonkas Maitre'd
- 2002MovieEnoughas Front Desk Clerk
- 2001TVScrubsas Man
- 2000TVMalcolm in the Middleas Sales Clerk
- 1999TVBeastMasteras Village leader
- 1999TVThe West Wingas Reporter
- 1998TVWill & Graceas Salesperson
- 1998TVWill & Graceas Man