Actor profile
John Ratzenberger
John Dezso Ratzenberger is an American actor, voice actor, director, producer, writer and entrepreneur. He is one of the most successful actors of all time in terms of box-office receipts. Ratzenberger is best known for portraying Cliff Clavin on the popular comedy series Cheers, for which he earned two Primetime Emmy nominations. He is also known being a voice actor appearing in almost every Pixar Animation Studios feature film, including Hamm in the Toy Story franchise, The Underminer in The Incredibles franchise, and Mack in the Cars franchise. Ratzenberger began his entertainment career while living in London in the 1970s. He had minor film and television roles throughout the late 70s and early 1980s before creating, and then landing, the role of the know-it-all mailman Cliff Clavin on Cheers, a role he portrayed throughout the show's eleven seasons. His first Pixar role was the voice of Hamm in Toy Story, and he has voiced Pixar characters in films and video games ever since. From 2004 to 2008 he hosted the TV documentary series Made in America. Outside of acting, he has promoted American entrepreneurship and manufacturing, and campaigned for several Republican candidates.
117 Movies
50 TV Shows
1 In Production 168 Credits
Filmography
Movies & TV Shows
Geared-Up
7th November 2006
Disney Through The Decades
1st January 2001
Likely Stories, Vol. 4
5th August 1983
Rating Notman
28th April 1982
Ray Gunn
as (voice)
John Ratzenberger's Made in America
6th January 2004
The Wonderful World of Disney
28th September 1997
Blossom
5th July 1990
Wizards and Warriors
26th February 1983
Code Red
20th September 1981
Cars: Lightning Racers
as Mack (voice)
Coming soon
Toy Story 5
17th June 2026 as Hamm (voice)