Sarah Kate Silverman (born December 1, 1970), also known as Big S, is an American actress, comedian and writer. She is best known for her role on The Sarah Silverman Program. Her movie roles include School of Rock (2003), Take This Waltz (2011) and Wreck-It Ralph (2012), while her television roles include Helen in Masters of Sex and Ollie in Bob's Burgers. Silverman also guest-starred in Matt Groening's other known TV series, The Simpsons, making her one of the few guest stars to have starred in both Futurama and The Simpsons.
In Futurama, she started voicing Philip J. Fry's ex-girlfriend, Michelle Jenkins, starting with "The Cryonic Woman"; Michelle was originally voiced by Kath Soucie in her first appearance.