Mary McCormack
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).
Born: 08 February 1969
Played In
Vicious
Mother
The Pitt
Dr. Linda Conley
National Memorial Day Concert
Self
Heels
Willie Day
Unpregnant
Debra Clarke
The L Word: Generation Q
Anne Finley
Still Laugh-In: The Stars Celebrate
Self
Treehouse
Lilith
The Kids Are Alright
Peggy Cleary
25 Words or Less
Self
25 Words or Less
25 Words or Less
Mary McCormack
For the People
Chloe Daniels
Will & Grace
Janet
Drone
Ellen
Loaded
Casey
Alien Code
Rebecca
The Crash
Sarah Schwab
An American Girl Story: Maryellen 1955 - Extraordinary Christmas
Kay Larkin
Divorce
Kathy DeSantis
Match Game
Self - Panelist
To Tell the Truth
Self - Panelist
Chelsea
Self
A Country Called Home
Amanda
Chelsea Does
Herself
Angie Tribeca
Abigail Liukin
Scooby-Doo! WrestleMania Mystery
Ms. Richards (voice)
Welcome to the Family
Caroline Yoder
Escape from Polygamy
Leann
The Newsroom
Molly Levy
Should've Been Romeo
Ellen
Scandal
Lisa Elliot
House of Lies
Denna Altshuler
The Unprofessional
Hilary Pfeiffer-Dunne
Watch What Happens Live with Andy Cohen
Self - Guest
Late Night with Jimmy Fallon
Self
In Plain Sight
Mary Shannon
1408
Lilly Enslin
For Your Consideration
Pilgrim Woman
Right at Your Door
Lexi
Madison
Bonnie McCormick
The Late Late Show with Craig Ferguson
Self
Traffic
Carole McKay
K Street
Maggie Morris
The Ellen DeGeneres Show
Self
Dickie Roberts: Former Child Star
Grace Finney
Jimmy Kimmel Live!
Self
Full Frontal
Linda
World Traveler
Margaret
K-PAX
Rachel Powell
Law & Order: Criminal Intent
Mary Shannon
High Heels and Low Lifes
Frances
BigLove
Phoebe
East of A
Daphne
Gun Shy
Gloria Nesstra
The Broken Hearts Club: A Romantic Comedy
Anne
Other Voices
Anna
The Big Tease
Monique
Mystery, Alaska
Donna Biebe
The West Wing
Kate Harper
The Late Late Show with Craig Kilborn
Self - Guest
True Crime
Michelle Ziegler
Harvest
Agent Becka Anslinger
Getting to Know You
Leila Lee
The Alarmist
Sally
54
New Year's Eve Wife (uncredited)
Deep Impact
Andrea Baker
Murder One: Diary of a Serial Killer
Justine Appleton
Fathers' Day
Virginia Farrell (uncredited)
Private Parts
Alison Stern
Colin Fitz
Moira
Murder One
Justine Appleton
The Wright Verdicts
Beth Eckhart
Backfire!
Sarah
Miracle on 34th Street
Myrna Foy
ER
Debbie
The Tonight Show with Jay Leno
Law & Order
Rickie the Bartender
Tony Awards
Self - Nominee