Sarah Lancaster

Sarah Lancaster (born February 12, 1980) is an American actress. Since the show's inception in 2007, she has co-starred in the NBC comedy-spy series Chuck, as the title character's sister, Ellie Bartowski.

Lancaster's first role on television was in 1994 as Rachel in the NBC series Saved by the Bell: The New Class. From 2004 - 2006, Lancaster appeared as Madison Kellner on The WB's Everwood. She is also widely know for her recurring guest role on NBC's Scrubs as JD's love-interest and fan-favorite, Lisa the Gift-Shop Girl. From 2006 - 2007, Lancaster played the role of Marjorie in ABC's TV series What About Brian.

She has appeared on Sabrina, the Teenage Witch, Dawson's Creek, That '70s Show, Scrubs, and CSI: Crime Scene Investigation. She also landed two recurring roles:on The WB series, Everwood, as Ephram's love interest Madison Kellner; and on David E. Kelley's FOX series, Boston Public. In 2005 she starred in the TV movie Living With the Enemy.

Lancaster has also worked as a jealous girlfriend-turned-serial killer in the movie Lovers Lane, and as the blackjack dealer, Veronica Harold, on CBS's short-lived Dr. Vegas.