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John O'Brien

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John O'Brien has appeared in 48 shows and 3 movies. A performance to be found in the role of Lab Tech Jeffrey in the series Grey's Anatomy. In the cinema, in the role of Mr. Masterson in the feature film Flicka.

John O'Brien
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Shows (48)

Grey's Anatomy
Grey's Anatomy
Lab Tech Jeffrey
2005
Desperate Housewives
Desperate Housewives
Dr. Wheeler
2004
Friends
Friends
Airline Employee
1994
Pretty Little Liars
Pretty Little Liars
Principal Hackett
2010
Malcolm in the Middle
Malcolm in the Middle
Sales Clerk
2000
Shameless (US)
Shameless (US)
Father Monroe
2011
Criminal Minds
Criminal Minds
Dr. Meyer
2005
9-1-1
9-1-1
Rod Billings
2018
NCIS
NCIS
Bruce
2003
S.W.A.T. (2017)
S.W.A.T. (2017)
Weber
2017
Community
Community
Chaplin
2009
Scrubs
Scrubs
Man
2001
Mad Men
Mad Men
Phil Kennedy
2007
Superstore
Superstore
Mike
2015
The X-Files
The X-Files
Missionary #2
1993
Chuck
Chuck
Older CIA Tech
2007
Monk
Monk
Maitre'd
2002
Ugly Betty
Ugly Betty
Joe of Happy Homes
2006
Two and a Half Men
Two and a Half Men
Waiter
2003
Dirty John
Dirty John
Cameron Scott
2018
Victorious
Victorious
Mr. Mooney
2010
Don't Trust the B---- in Apartment 23
Don't Trust the B---- in Apartment 23
Tom
2012
Medium
Medium
Hotel Clerk
2005
Ally McBeal
Ally McBeal
Waiter
1997
Hacks (2021)
Hacks (2021)
Duncan
2021
Austin & Ally
Austin & Ally
Mr. Neidermeyer
2011
Mom
Mom
Waiter
2013
Young & Hungry
Young & Hungry
Mr. Klepfer
2014
The Mindy Project
The Mindy Project
Dr. Jones
2012
Light as a Feather
Light as a Feather
Reverend Fahey
2018
Will & Grace
Will & Grace
Man / Salesperson
1998
The West Wing
The West Wing
Reporter
1999
Perry Mason (2020)
Perry Mason (2020)
Ernie Magnuson
2020
Transparent
Transparent
Professor
2014
What I Like About You
What I Like About You
Dr. Thompson / Minister
2002
Workaholics
Workaholics
Doctor
2011
Boston Legal
Boston Legal
Clerk #2
2004
The Crazy Ones
The Crazy Ones
Larry
2013
The Practice
The Practice
Foreman
1997
Clueless
Clueless
Zombie
1996
Bob Hearts Abishola
Bob Hearts Abishola
James
2019
Eleventh Hour (US)
Eleventh Hour (US)
Manager
2008
Law & Order: Los Angeles
Law & Order: Los Angeles
Scott Hancox
2010
Better With You
Better With You
Florist
2010
The Drew Carey Show
The Drew Carey Show
Rick
1995
Beastmaster
Beastmaster
Village leader
1999
The Middleman
The Middleman
Newscaster
2008
Less Than Perfect
Less Than Perfect
Executive
2002

Movies (3)

Flicka
Flicka
Mr. Masterson
2006
The Last Heist
The Last Heist
Manager Mark
2016
This Game's Called Murder
This Game's Called Murder
Man in Suit
2021

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