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 19 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

    John joins the Cooper family for Thanksgiving dinner.
  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

    John decides to learn how to drive and asks Meemaw to be his instructor.
  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

    John invites Meemaw to be his plus-one at a university event.
  10. A Math Emergency and Perky Palms

    215. A Math Emergency and Perky Palms as Dr. John Sturgis

    Aired February 7, 2019

    After Dr. Sturgis gives Sheldon a 95% score on a test, the two face off in an intellectual battle of wits.
  11. A Perfect Score and a Bunsen Burner Marshmallow

    218. A Perfect Score and a Bunsen Burner Marshmallow as Dr. John Sturgis

    Aired April 4, 2019

    When Sheldon wants to attend college full time, Dr. Sturgis agrees to let Sheldon live with him on a trial basis.
  12. A Political Campaign and a Candy Land Cheater

    219. A Political Campaign and a Candy Land Cheater as Dr. John Sturgis

    Aired April 25, 2019

    When Sheldon calls Dr. Sturgis for advice on public speaking, his story of being hit by lightning on the mini golf course doesn't help.
  13. A Proposal and a Popsicle Stick Cross

    220. A Proposal and a Popsicle Stick Cross as Dr. John Sturgis

    Aired May 2, 2019

    John takes Meemaw out for dinner on the one-year-anniversary of their first date.
  14. A Broken Heart and a Crock Monster

    221. A Broken Heart and a Crock Monster as Dr. John Sturgis

    Aired May 9, 2019

    John sees another side of Meemaw when he joins her at a casino.
  15. A Swedish Science Thing and the Equation for Toast

    222. A Swedish Science Thing and the Equation for Toast as Dr. John Sturgis

    Aired May 16, 2019

    John is distressed by the upcoming announcement of the Nobel Prize winners as he realizes his dream of winning one is not going to be realized.
  16. A Pineapple and the Bosom of Male Friendship

    305. A Pineapple and the Bosom of Male Friendship as Dr. John Sturgis

    Aired October 24, 2019

    After being released from the mental hospital, Dr. Sturgis unexpectedly breaks up with Meemaw.
  17. A Parasol and a Hell of an Arm

    306. A Parasol and a Hell of an Arm as Dr. John Sturgis

    Aired November 7, 2019

    A church carnival leads Missy to try out for the baseball team. Also, Meemaw struggles after her breakup with Dr. Sturgis.
  18. Pongo Pygmaeus and a Culture that Encourages Spitting

    307. Pongo Pygmaeus and a Culture that Encourages Spitting as Dr. John Sturgis

    Airs November 14, 2019

    Sheldon starts an internet flame war, and Missy stands up to the boys on her baseball team. Also, Meemaw is unhappy when George Sr. spends time with her new boyfriend.
  19. : The Sin of Greed and a Chimichanga from Chi-Chi's

    308. The Sin of Greed and a Chimichanga from Chi-Chi's as Dr. John Sturgis

    Airs November 21, 2019

    The University makes George Sr. a lucrative job offer in the hopes of recruiting Sheldon. Also, Georgie gets a job working for Meemaw's new boyfriend, and Mary is determined to rid her home of greed.
 Search for Wallace Shawn on IMDB