Life and career

Siemaszko was born in Chicago. Her father, Konstanty, was a Polish-born Roman Catholic who was a fighter in the Polish Underground, and who survived the Sachsenhausen concentration camp, Her mother, Collette McAllister, was English. Her brothers are Casey Siemaszko, an actor, and Corky Siemaszko, a reporter and writer for the New York Daily News. She attended the Goodman School of Drama at DePaul University in Chicago, which her brother Casey also attended.

Her first feature film was in the 1986 comedy movie One More Saturday Night as Karen Lundahl. Her other well-known role in the 1980s was the 1988 comedy film License to Drive, as Les's smart twin sister, Natalie Anderson. She has starred in many TV movies, especially ten Mystery Woman TV movies, the latest of which is Mystery Woman: In the Shadows.

She appeared in the 1992 film Reservoir Dogs as an undercover cop, although her scene was cut; it is available in the deleted scene section on the Reservoir Dogs 10th Anniversary-Special Edition DVD.

She played actress Mia Farrow in the CBS miniseries Sinatra a film about the life of singer Frank Sinatra.

In 1992 she played the lead in Wild Orchid II: Two Shades of Blue.

In 1998, Siemaszko played Mona Ramsey in the Showtime miniseries More Tales of the City, the sequel to 1994's Tales of the City (which starred Chloe Webb in the role of Mona), and had a brief role on Sports Night as the Nanny for Casey's son Charlie. She is also known for playing Ellie Bartlet on the hit TV drama The West Wing. She has made guest appearances on TV shows including Red Shoe Diaries, Judging Amy, Tales from the Crypt, CSI: Crime Scene Investigation, Grey's Anatomy and Private Practice.

Filmography

• One More Saturday Night (1986)
• License to Drive (1988)
• Tucker: The Man and His Dream (1988)
• Lonesome Dove (1989)
• Lost Angels (1989)
• Bed & Breakfast (1992)
• Wild Orchid II: Two Shades of Blue (1992)
• Sinatra (1992) (TV)
• Reservoir Dogs (1992) (deleted scene)
• Tales from the Crypt (TV)
• Another Woman's Lipstick (1993) (Zalman King's - Red Shoe Diaries 3)
• The Saint of Fort Washington (1993)
• Airheads (1994)
• The American President (1995)
• Runaway Car (1997)
• Suicide Kings (1997)
• Goodbye Lover (1998)
• More Tales of the City (1998)
• Jakob the Liar (1999)
• The Big Tease (1999)
• Sports Night (1999) (TV)
• The West Wing (2001, 2003, 2004, 2005, 2006) (TV)
• A Carol Christmas (2003) (TV)
• CSI: Crime Scene Investigation (2004)
• Mystery Woman: Mystery Weekend (2005) (TV)
• Mystery Woman: Snapshot (2005) (TV)
• Mystery Woman: Sing Me a Murder (2005) (TV)
• Mystery Woman: Vision of a Murder (2005) (TV)
• Mystery Woman: Game Time (2005) (TV)
• Mystery Woman: At First Sight (2006) (TV)
• Mystery Woman: Wild West Mystery (2006) (TV)
• Mystery Woman: Oh Baby (2006) (TV)
• Mystery Woman: Redemption (2006) (TV)
• Mystery Woman: In the Shadows (2007) (TV)
• Private Practice (2007) (TV)
• The Haunting of Molly Hartley (2008)
• Grey's Anatomy (2008)
• The Artist (2011)

Video gameography

• Grand Theft Auto: San Andreas (2004)
• Jak and Daxter: The Lost Frontier (2009)

[ Source: Wikipedia ]