
Acting
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.
Known for
Full filmography

The Simpsons
1989
ANIMATION
Coco
2017
FAMILY
Bones
2005
CRIME
Frasier
1993
COMEDY
Cheers
1982
COMEDY
Toy Story 5
2026
ANIMATION
The Goldbergs
2013
COMEDY
Mom
2013
COMEDY
That '70s Show
1998
COMEDY
Magnum, P.I.
1980
CRIME
Sabrina, the Teenage Witch
1996
COMEDY
Hill Street Blues
1981
DRAMA
St. Elsewhere
1982
DRAMA
Wings
1990
COMEDY
Touched by an Angel
1994
SCI-FI
Swapped
2026
ADVENTURE
Toy Story
1995
FAMILY
Drop Dead Diva
2009
COMEDY
Caroline in the City
1995
COMEDY
Ratatouille
2007
ANIMATION
Inside Out
2015
ANIMATION
Fish Hooks
2010
ANIMATION
Sister, Sister
1994
COMEDY
Monsters, Inc.
2001
ANIMATION
WALL·E
2008
ANIMATION
Toy Story 2
1999
ANIMATION
Inside Out 2
2024
ANIMATION
Finding Nemo
2003
ANIMATION
8 Simple Rules
2002
COMEDY
Captain Planet and the Planeteers
1990
ANIMATION