Guest Star :: Wallace Shawn

Wallace Shawn

Wallace Shawn is an American actor, playwright and writer. He is best known for his roles in the films The Princess Bride, Clueless and the Toy Story series.

His other film credits include the Woody Allen film Manhattan, All That Jazz, and My Dinner with Andre. In his memorable role in The Princess Bride, Shawn played Vizzini who repeatedly uttered the phrase "Inconceivable!" as his convoluted plans fell apart.  Along with voicing the dinosaur Rex in the Toy Story films, Shawn has also lent his voice to films including A Goofy Movie, The Incredibles, and Chicken Little.

Shawn also starred in the 1995 film Clueless as lonely teacher Mr. Hall, who was exasperated by student Cher who later set him up with another teacher. He reprised the role in the short-lived 1996 TV series. Shawn's other TV credits include recurring roles on The Cosby Show, Star Trek: Deep Space Nine, Crossing Jordan, Gossip Girl, and Mozart in the Jungle. He has also made guest appearances in shows including Ally McBeal, Sex and the City, Desperate Housewives, and Mr. Robot.

As a playwright, Shawn has produced plays which include Marie and Bruce, Aunt Dan and Lemon, The Designated Mourner, and The Threepenny Opera. He has also published two collections of essays.


 Wallace Shawn has guest starred in 9 episodes of Young Sheldon.

  1. Gluons, Guacamole, and the Color Purple

    119. Gluons, Guacamole, and the Color Purple as Dr. John Sturgis

    Aired April 19, 2018

    No longer feeling challenged by the high school curriculum, Sheldon audits a class taught by a brilliant scientist, Dr. John Sturgis.
  2. Summer Sausage, a Pocket Poncho, and Tony Danza

    121. Summer Sausage, a Pocket Poncho, and Tony Danza as Dr. John Sturgis

    Aired May 3, 2018

    As Sheldon is forced to watch Dr. John Sturgis's budding relationship with Meemaw from a distance, George Sr. and Mary take the opportunity to bond with their other children.
  3. Vanilla Ice Cream, Gentlemen Callers, and a Dinette Set

    122. Vanilla Ice Cream, Gentlemen Callers, and a Dinette Set as Dr. John Sturgis

    Aired May 10, 2018

    When Ira Rosenbloom asks Meemaw out on a date, Dr. Sturgis finds the challenge of another man exhilarating.
  4. A Rival Prodigy and Sir Isaac Neutron

    202. A Rival Prodigy and Sir Isaac Neutron as Dr. John Sturgis

    Aired September 27, 2018

    When Dr. John Sturgis invites another ten-year-old genius to audit his course, Sheldon feels jealous of the attention he's giving to Paige.
  5. A Research Study and Czechoslovakian Wedding Pastries

    205. A Research Study and Czechoslovakian Wedding Pastries as Dr. John Sturgis

    Aired October 18, 2018

    Dr. Sturgis tells George about a research study on twins.
  6. Carbon Dating and a Stuffed Raccoon

    207. Carbon Dating and a Stuffed Raccoon as Dr. John Sturgis

    Aired November 1, 2018

    When John stops by Meemaw's yard sale, he inadvertently makes her see she isn't ready to part with her late husband's belongings.
  7. Family Dynamics and a Red Fiero

    209. Family Dynamics and a Red Fiero as Dr. John Sturgis

    Aired November 15, 2018

    Sheldon studies his family for a psychology project, and Thanksgiving dinner turns into a family fight when George Sr. is offered a job in Oklahoma.
  8. A Stunted Childhood and a Can of Fancy Mixed Nuts

    210. A Stunted Childhood and a Can of Fancy Mixed Nuts as Dr. John Sturgis

    Aired December 6, 2018

    When Sheldon learns that people with stunted childhoods can turn into social outcasts, he tries to act like a kid. Also, Meemaw and Dr. Sturgis' relationship is tested when she teaches him how to drive.
  9. : A Nuclear Reactor and a Boy Called Lovey

    213. A Nuclear Reactor and a Boy Called Lovey as Dr. John Sturgis

    Aired January 17, 2019

    Sheldon attempts to build a nuclear reactor. Also, a university cocktail party gets heated when Dr. Sturgis’ colleague, Dr. Linkletter (Ed Begley, Jr.), flirts with Meemaw, and Georgie is heartbroken when he learns Veronica (Isabel May) has a boyfriend.
 Search for Wallace Shawn on IMDB