John O'Brien
Known For
Grey's Anatomy
82%
Lab Tech Jeffrey
2005
Friends
84%
Airline Employee
1994
Malcolm in the Middle
85%
Sales Clerk
2000
Criminal Minds
83%
Dr. Meyer
2005
Two and a Half Men
74%
Waiter
2003
The X-Files
84%
Missionary #2
1993
Shameless
82%
Father Monroe
2011
9-1-1
82%
Rod Billings
2018
Good Grief
Dan
2024
Cheaper by the Dozen
63%
Principal
2022
This Game's Called Murder
34%
Man in Suit
2021
Perry Mason
72%
Ernie Magnuson
2020
Bob Hearts Abishola
75%
James
2019
Dirty John
68%
Cameron Scott
2018
Light as a Feather
76%
Reverend Fahey
2018
9-1-1
82%
Rod Billings
2018
S.W.A.T.
80%
Weber
2017
The Last Heist
44%
Manager Mark
2016
Superstore
75%
Mike
2015
Mortdecai
55%
Butler
2015
Transparent
64%
Professor
2014
Young & Hungry
67%
Mr. Klepfer
2014
The Crazy Ones
61%
Larry
2013
Mom
73%
Waiter
2013
The Mindy Project
63%
Dr. Jones
2012
Don't Trust the B---- in Apartment 23
68%
Tom
2012
Being Flynn
61%
Airline Pilot
2012
Austin & Ally
78%
Mr. Neidermeyer
2011
Workaholics
74%
Doctor
2011
Shameless
82%
Father Monroe
2011
Law & Order: LA
68%
Scott Hancox
2010
Better With You
65%
Florist
2010
Pretty Little Liars
80%
Principal Hackett
2010
Victorious
82%
Mr. Mooney
2010
Community
80%
Chaplin
2009
Eleventh Hour
66%
Manager
2008