John Ratzenberger

John Dezso Ratzenberger (born April 6, 1947) is an American actor. He is best known for playing the character Cliff Clavin on the comedy series ''Cheers'', for which he earned two Primetime Emmy nominations. Ratzenberger reprised the role in the short-lived spin-off ''The Tortellis'', an episode of ''Wings,'' as well as in an episode of ''Frasier''. He has voiced various characters in several Pixar animated feature films including Hamm in the ''Toy Story'' franchise, The Abominable Snowman in the ''Monsters, Inc.'' franchise, Mack in the ''Cars'' franchise, The Underminer in ''The Incredibles'' franchise, Fritz in the ''Inside Out'' franchise, and many others.

Ratzenberger began his entertainment career while living in London in the 1970s. He acted in and wrote film and television through the 1970s and early 1980s before returning to America. At an audition for a role in a new sitcom, Ratzenberger created the character of Cliff Clavin. ''Cheers'' (1982–1993) was a success and went on to run for 11 years. After ''Cheers'', he began voicing characters for Pixar; Ratzenberger's first role was Hamm in Pixar's debut feature film ''Toy Story'' (1995), and he would continue to voice characters in many subsequent Pixar films. Including voice acting and cameos, he is the third highest-grossing actor of all time. Provided by Wikipedia