who is the guy in every pixar movie
John Ratzenberger John Dezso Ratzenberger (born April 6, 1947)[1] is an American actor, voice actor, and entrepreneur. He played Cliff Clavin in the TV show Cheers, for which he earned two Emmy nominations, and plays voice roles in Pixar Animation Studios' films, including Hamm in the Toy Story franchise, The Underminer in The Incredibles franchise, and Mack in the Cars franchise. He is the only actor to appear in all of Pixar's feature films, and with minor appearances in major films such as Superman and The Empire Strikes Back, he is one of the most successful actors of all time in terms of box-office receipts.[2]