Gillian Anderson Free Screensaver. Photos slideshow. Gillian Leigh Anderson (born August 9, 1968) is an Emmy and Golden Globe Award-winning American actress, best known for her roles as FBI Agent Dana Scully in the American TV series The X-Files and Lady Dedlock in the BBC TV series Bleak House.Gillian Anderson started her career as a member of an amateur actor group, while at high school. Her love of the theatre took her to the national theatre of Great Britain at the Cornell University of Ithaca, in New York. Afterwards, Anderson left for the Goodman Theatre School of the DePaul University in Chicago, where she finished her education. Her big break came with The X Files (1993) (with David Duchovny) as Dana Scully. There, she met her future husband (Clyde Klotz), marrying on January 1st 1994. One month later, Gillian was pregnant. Her daughter, Piper Anderson, was born on the 25th September 1994. Her film career started with the movie The Turning (1992) in 1997 and, the following year, she starred in Playing by Heart (1998) with Sean Connery, Ellen Burstyn, Angelina Jolie and Dennis Quaid.