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John Dezso Ratzenberger is an American actor, voice actor, director, producer, screenwriter, and entrepreneur, who is best known for his role as Cliff Clavin in the NBC sitcom Cheers. He reprised this role for Mickey's 60th Birthday and Disneyland's 35th Anniversary Celebration. He has also done voice work in every Pixar film to date until Onward, (though he has an uncredited appearance as a subway passenger in Soul) but will continue to do so as of 2024, with at least one live-action performance in a Disney television film.


Ratzenberger was born in Bridgeport, Connecticut, the son of Bertha Veronica (née Grochowski), and Dezso Alexander Ratzenberger, a WWII veteran who had been a combat engineer in the Philippines. His father was of Austrian and Hungarian descent, and his mother was of Polish ancestry. Ratzenberger attended St. Ann's School in Bridgeport and then Sacred Heart University in Fairfield, Connecticut. In 1969, Ratzenberger worked at the Woodstock Festival as a heavy equipment operator and as part of the crew building the stage. John moved to London in 1971, where he began his acting, writing, and directing career.




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  • The running gag of Ratzenberger portraying at least one character in every Pixar movie is referenced during the end credits of Cars; when Mack watches the Cars-parodies of previous Pixar films, he thinks that whoever did the voices of Hamm, Yeti, and P.T. Flea (all in car form) were great actors, until he realized it was the same voice actor in all those films and asks, "What kind of a cut-rate production is this?"
  • P.T. Flea from A Bug's Life is Ratzenberger's personal favorite character of his Pixar roles.
  • When Toy Story 3 was initially being made by Circle 7 Animation, Ratzenberger refused to voice Hamm unless Pixar produced the film.
  • While Soul is the first Pixar movie in which Ratzenberger doesn't have a voice role, his likeness does appear in the film. He also does not have a voice role in Luca, Turning Red, Lightyear, and Elemental, though this may be because he and Pixar likely decided to retire that tradition. However, he returned to voice Fritz in Inside Out 2, and is likely to reprise his role as Hamm for Toy Story 5.
  • Outside of Disney, Ratzenberger is also known for voicing Rigger (Hoggish Greedly's sidekick) in Captain Planet and the Planeteers and portraying Mick Vaughn in the 2015 Fox comedy film Russell Madness.

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