Mary was last seen as a series regular on NBC’s award-winning program “The West Wing” and in a recurring role on the critically acclaimed NBC series “ER.” 

Mary’s breakout performance opposite Howard Stern in Private Parts won her universal critical acclaim. She followed that film with a highly successful run opposite Alan Cumming as ‘Sally Bowles’ in the Sam Mendes and Rob Marshall- directed Broadway production of Cabaret for the Roundabout Theatre Company.

McCormack’s additional television and feature credits include:  Chris Corkak’s thriller Right at Your Door.  Starring opposite John Cusack and Samuel L. Jackson in Stephen King’s riveting thriller, 1408; Christopher Guests’ For Your Consideration; the Steven Soderbergh and George Clooney political series for HBO, “K-Street,” as well as the USA Network miniseries “Traffic,” directed by Stephen Hopkins (“24”); Dickie Roberts: Former Child Star opposite David Spade; K-PAX opposite Jeff Bridges and Kevin Spacey; High Heels & Low Lifes, with Minnie Driver; Mystery, Alaska, written by David E. Kelley and starring Russell Crowe; Other Voices, with Stockard Channing and Campbell Scott; The Broken Hearts Club, opposite John Mahoney and Timothy Olyphant; The Big Tease opposite Craig Ferguson; Gun Shy with Sandra Bullock and Liam Neeson; the Clint Eastwood film, True Crime; Mimi Leder’s Deep Impact; The Alarmist, opposite Stanley Tucci; Father’s Day and Miracle on 34th Street.

Additional stage credits include the acclaimed London stage production of Neil LaBute’s play Bash and the David Warren – directed productions of My Marriage to Earnest Borgnine and A Fair Country.

McCormack’s previous television appearances include her critically-acclaimed performance as ‘Justine Appleton’ on the Steve Bochco series “Murder One.”