Acting
Mary McCormack
Born Feb 8, 1969 · Plainfield, New Jersey, USA
Mary Catherine McCormack is an American actress. She has had leading roles as Justine Appleton on the series Murder One (1995–1997), as Deputy National Security Adviser Kate Harper on The West Wing (2004–2006), as Deputy U.S. Marshal Mary Shannon on In Plain Sight (2008–2012), and as Peggy on the comedy series The Kids Are Alright (2018–2019).
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Acting
Vicious
2025
Horror · Thriller
The Pitt
2025
Drama
National Memorial Day Concert
2023
Documentary
Heels
2021
Drama · Action & Adventure
Unpregnant
2020
Drama · Comedy
The L Word: Generation Q
2019
Drama
Still Laugh-In: The Stars Celebrate
2019
Comedy · Documentary
Treehouse
2019
Horror · Thriller · TV Movie
The Kids Are Alright
2018
Comedy
25 Words or Less
2018
Reality
For the People
2018
Drama
Will & Grace
2017
Comedy
Drone
2017
Thriller
Loaded
2017
Drama · Comedy
Alien Code
2017
Science Fiction
Nobodies
2017
Comedy
The Crash
2017
Crime · Thriller
An American Girl Story: Maryellen 1955 - Extraordinary Christmas
2016
Family
Divorce
2016
Comedy · Drama
A Country Called Home
2016
Drama
Angie Tribeca
2016
Comedy · Action & Adventure · Crime
Scooby-Doo! WrestleMania Mystery
2014
Animation · Comedy · Family
Welcome to the Family
2013
Comedy · Family
Escape from Polygamy
2013
TV Movie · Drama
The Newsroom
2012
Drama
Should've Been Romeo
2012
Comedy · Drama
Scandal
2012
Drama
House of Lies
2012
Comedy · Drama
In Plain Sight
2008
Drama · Action & Adventure · Crime
1408
2007
Horror · Mystery
For Your Consideration
2006
Comedy
Right at Your Door
2006
Drama · Thriller · Science Fiction
Madison
2005
Adventure · Action · Drama
Traffic
2004
Crime · Drama
K Street
2003
Drama · Comedy
Dickie Roberts: Former Child Star
2003
Comedy
Full Frontal
2002
Comedy · Romance
World Traveler
2002
Drama
K-PAX
2001
Science Fiction · Drama · Mystery
Law & Order: Criminal Intent
2001
Drama
High Heels and Low Lifes
2001
Action · Crime · Comedy
BigLove
2001
Comedy
Gun Shy
2000
Action · Comedy · Romance
The Broken Hearts Club: A Romantic Comedy
2000
Comedy · Drama · Romance
Other Voices
2000
Thriller
The Big Tease
1999
Comedy
Mystery, Alaska
1999
Drama · Comedy
The West Wing
1999
Drama
True Crime
1999
Crime · Thriller · Mystery
Harvest
1999
Drama
Getting to Know You
1999
Drama
The Alarmist
1998
Comedy
54
1998
Drama · Romance
Deep Impact
1998
Action · Drama · Science Fiction
Murder One: Diary of a Serial Killer
1997
Drama · TV Movie
Fathers' Day
1997
Comedy · Family
Private Parts
1997
Comedy · Drama
Colin Fitz
1997
Comedy
Murder One
1995
Drama
The Wright Verdicts
1995
Drama
Backfire!
1995
Comedy
Miracle on 34th Street
1994
Fantasy · Drama · Family
ER
1994
Drama
The Tonight Show with Jay Leno
1992
Talk · Comedy
Law & Order
1990
Crime · Drama