John O'Brien
Acting
No biography is available yet. You can still browse notable work below.
As actor 58
Grey's Anatomy
2005
NCIS
2003
Criminal Minds
2005
Shameless
2011
Friends
1994
9-1-1
2018
S.W.A.T.
2017
Desperate Housewives
2004
Two and a Half Men
2003
The West Wing
1999
Monk
2002
Mad Men
2007
The X-Files
1993
Scrubs
2001
Medium
2005
Hacks
2021
Malcolm in the Middle
2000
Community
2009
Boston Legal
2004
Pretty Little Liars
2010
Mom
2013
The Practice
1997
Chuck
2007
The Drew Carey Show
1995
Superstore
2015
Will & Grace
1998
The Mindy Project
2012
Victorious
2010
Workaholics
2011
Ugly Betty
2006
Perry Mason
2020
Law & Order: LA
2010
Bob Hearts Abishola
2019
What I Like About You
2002
BeastMaster
1999
Austin & Ally
2011
Ally McBeal
1997
Transparent
2014
Don't Trust the B---- in Apartment 23
2012
Young & Hungry
2014
Eleventh Hour
2008
Less than Perfect
2002
Dirty John
2018
Clueless
1996
The Crazy Ones
2013
The Middleman
2008
Light as a Feather
2018
Enough
2002
Better With You
2010
Cheaper by the Dozen
2022
Mortdecai
2015
Flicka
2006
Being Flynn
2012
This Game's Called Murder
2021
Mom, Can I Keep Her?
1998
The Last Heist
2016
Good Grief
2024
Isle of Lesbos
1997