Her character was originally intended to die; however, the producers changed the plot and she remained on the show for six seasons until 2000.She won an Emmy Award for Best Supporting Actress in a Television Drama in 1994, and continued to be nominated for this award every year during her tenure on ER.In December 2006, she played Jennifer Bloom in the Syfy Channel miniseries The Lost Room.In an August 2006 interview with tvguide.com, Margulies said she was close to accepting an offer to return to ER for a four-episode arc, with Noah Wyle, that filmed in Hawaii during the 2005/06 season.Julianna Luisa Margulies was born in June 8, 1966 who is currently 49 years old.She was born in Spring Valley, New York of United States.She starred as the protagonist and narrator (Morgaine) in the TNT miniseries The Mists of Avalon (2001) and participated in the documentary film Searching for Debra Winger (2002).
Her film work after ER included Evelyn with Pierce Brosnan and Ghost Ship (2002) with Gabriel Byrne and Ron Eldard.
She played the title character, Elizabeth Canterbury, a lawyer described as a "tough-minded defense attorney who isn't afraid to push boundaries in order to protect innocent clients." She was also credited as a producer of the show.
The series was severely affected by the 2007–2008 Writers Guild of America strike; it was cancelled by the network after only six episodes.
In April 2006, she appeared in four episodes of the sixth season of The Sopranos, portraying realtor Julianna Skiff.
In August 2006, she appeared in Snakes on a Plane as flight attendant Claire Miller.