John O'Brien
Acting
Known For
tv
8.2
2005
Grey's Anatomy
2005 · tv
tv
8.3
2005
Criminal Minds
2005 · tv
tv
7.6
2003
NCIS
2003 · tv
tv
8.2
2011
Shameless
2011 · tv
tv
8.4
1994
Friends
1994 · tv
tv
8.0
2017
S.W.A.T.
2017 · tv
tv
7.5
2003
Two and a Half Men
2003 · tv
tv
7.9
2004
Desperate Housewives
2004 · tv
tv
8.2
2018
9-1-1
2018 · tv
tv
8.4
1993
The X-Files
1993 · tv
tv
8.0
2002
Monk
2002 · tv
tv
8.5
2000
Malcolm in the Middle
2000 · tv
tv
8.1
2007
Mad Men
2007 · tv
tv
7.5
2021
Hacks
2021 · tv
tv
8.3
1999
The West Wing
1999 · tv
tv
7.5
2005
Medium
2005 · tv
tv
8.2
2001
Scrubs
2001 · tv
tv
8.0
2010
Pretty Little Liars
2010 · tv
tv
7.3
2013
Mom
2013 · tv
tv
7.9
2004
Boston Legal
2004 · tv
tv
7.6
2015
Superstore
2015 · tv
tv
7.7
1997
The Practice
1997 · tv
tv
8.0
2009
Community
2009 · tv
tv
6.9
1998
Will & Grace
1998 · tv
tv
6.5
1995
The Drew Carey Show
1995 · tv
tv
7.7
2007
Chuck
2007 · tv
tv
8.2
2010
Victorious
2010 · tv
tv
6.2
2012
The Mindy Project
2012 · tv
tv
6.4
2006
Ugly Betty
2006 · tv
tv
7.5
2019
Bob Hearts Abishola
2019 · tv