McCormack was last seen as a series regular on NBC's award-winning program "The West Wing" and as a recurring character on the critically acclaimed NBC series "ER." She also starred in "Right At Your Door" which premiered at the 2006 Sundance Film Festival and was released earlier this year. McCormack was also seen opposite John Cusack and Samuel L. Jackson in Stephen King's riveting thriller, "1408."
McCormack'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.
Some of McCormack's additional television and feature credits include the following: the Steven Soderbergh and George Clooney political series for HBO, "K-Street," the USA Network miniseries "Traffic," "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 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 Ernest Borgnine" and "A Fair Country."
Born in Plainfield, New Jersey, McCormack is a graduate of Trinity College and resides with her family in Los Angeles.