Wallace Shawn

 is a U.S. actor, playwright, and essayist. His best-known film roles include Wally Shawn in My Dinner with Andre (1981), Vizzini in The Princess Bride (1987), and Rex the toy dinosaur in the Toy Story animated film series. Among his other known voice acting roles include Mr. Huph in The Incredibles and Bertram in Family Guy. He provided the voice of Saul, the nebbish cavern tour guide in "Phineas and Ferb Save Summer".