John O'Brien

John O'Brien

Acting

Known For

TV Criminal Minds

Criminal Minds

2005 ★ 8.3
TV Grey's Anatomy

Grey's Anatomy

2005 ★ 8.2
TV NCIS

NCIS

2003 ★ 7.6
TV Friends

Friends

1994 ★ 8.4
TV Shameless

Shameless

2011 ★ 8.2
TV S.W.A.T.

S.W.A.T.

2017 ★ 8.0
TV Desperate Housewives

Desperate Housewives

2004 ★ 7.9
TV 9-1-1

9-1-1

2018 ★ 8.2
TV Monk

Monk

2002 ★ 7.9
TV Two and a Half Men

Two and a Half Men

2003 ★ 7.5
TV The X-Files

The X-Files

1993 ★ 8.4
TV The West Wing

The West Wing

1999 ★ 8.3
TV Mad Men

Mad Men

2007 ★ 8.1
TV Will & Grace

Will & Grace

1998 ★ 6.9
TV Medium

Medium

2005 ★ 7.5
TV The Practice

The Practice

1997 ★ 7.6
TV Scrubs

Scrubs

2001 ★ 8.2
TV Pretty Little Liars

Pretty Little Liars

2010 ★ 8.0
TV Boston Legal

Boston Legal

2004 ★ 7.9
TV Malcolm in the Middle

Malcolm in the Middle

2000 ★ 8.5