John Ratzenberger
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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
Credits
Toy Story 5 (2026)
as Hamm (voice)
Swapped (2026)
as Elder Javan (voice)
Toy Story (1995)
as Hamm (voice)
Toy Story 2 (1999)
as Hamm (voice)
Monsters, Inc. (2001)
as Yeti (voice)
Toy Story 4 (2019)
as Hamm (voice)
Toy Story 3 (2010)
as Hamm (voice)
Inside Out 2 (2024)
as Fritz (voice)
Inside Out (2015)
as Fritz (voice)
Ratatouille (2007)
as Mustafa (voice)
WALL·E (2008)
as John (voice)
Finding Nemo (2003)
as Fish School (voice)
Brave (2012)
as Gordon (voice)
Coco (2017)
as Juan Ortodoncia (voice)
The Incredibles (2004)
as Underminer (voice)
Cars 2 (2011)
as Mack (voice)
Cars (2006)
as Mack / Hamm Truck / Abominable Snow Plow / P.T. Flea Car (voice)
Up (2009)
as Construction Foreman Tom (voice)
Monsters University (2013)
as Yeti (voice)
Incredibles 2 (2018)
as Underminer (voice)
Cars 3 (2017)
as Mack (voice)
The Good Dinosaur (2015)
as Earl (voice)
The Empire Strikes Back (1980)
as Major Derlin
Finding Dory (2016)
as Husband Crab (Bill) (voice)
A Bug's Life (1998)
as P.T. Flea (voice)
Luck (2022)
as Rootie (voice)
Superman (1978)
as 1st Controller
Planes (2013)
as Harland (voice)
Onward (2020)
as Construction Worker Fennwick (voice)
Superman II (1980)
as Controller
Spellbound (2024)
as Milo The Monster Handler (voice)
Hawaiian Vacation (2011)
as Hamm (voice)
Planes: Fire & Rescue (2014)
as Brodi (voice)
A Bridge Too Far (1977)
as U.S. Lieutenant
Gandhi (1982)
as American Lieutenant
Partysaurus Rex (2012)
as Hamm (voice)
Firefox (1982)
as Chief Peck
Small Fry (2011)
as Hamm (voice)
Super Buddies (2013)
as Marvin 'Gramps' Livingstone
Something New (2006)
as Brian's Father (uncredited)
Outland (1981)
as Tarlow
Your Friend the Rat (2007)
as P.T. Flea (voice) (uncredited)
The Pixar Story (2007)
as Yeti (voice) (archive footage)
Twilight's Last Gleaming (1977)
as Sgt. Kopecki
Motel Hell (1980)
as Drummer
She's Having a Baby (1988)
as John Ratzenberger (uncredited)
Battletruck (1982)
as Rusty
The Earth Day Special (1990)
as Cliff Clavin
Reds (1981)
as Communist Leader (uncredited)
Valentino (1977)
as Newshound
Arabian Adventure (1979)
as Achmed
Warlords of Atlantis (1978)
as Fenn
House II: The Second Story (1987)
as Bill
Under Pressure (1997)
as Al Calavito
Hanover Street (1979)
as Sgt. John Lucas
Yanks (1979)
as Cpl Cook
Local Commercial (2012)
as Earl T. Barnum
That Darn Cat (1997)
as Dusty
Monkey Up (2016)
as Mr. Hartz
Superman II: The Richard Donner Cut (2006)
as Controller #1
One Night Stand (1997)
as Phil
Ray Gunn (2026)
as (voice)
The Ritz (1976)
as Patron
Mickey's 60th Birthday (1988)
as Cliff Clavin
Pup Star: Better 2Gether (2017)
as Salty (voice)
In Search of Tomorrow (2022)
as Self - Interviewee
Camp Cucamonga (1990)
as Marvin Schector
Protocol (1984)
as Security Guard on TV
Determination of Death (2001)
as Charlie Halloran
Must See TV: An All Star Tribute to James Burrows (2016)
as Self
Geared-Up (2006)
Actor
Combat Academy (1986)
as Mr. Barnett
Mystery Woman: Redemption (2006)
as Jim Carter
WWJD II: The Woodcarver (2012)
as Ernest Otto
The Falcon and the Snowman (1985)
as Detective
NBC 75th Anniversary Special (2002)
as Self
The Village Barbershop (2008)
as Art Leroldi
Tapawingo (2025)
as Tom Roan
Timestalkers (1987)
as General Joe Brodsky
Toy Story at 20: To Infinity and Beyond (2015)
as Self
Matchmaker Santa (2012)
as George
Monty Python: Live at Aspen (1998)
as Audience Member (uncredited)
Ragtime (1981)
as Policeman
The Bitch (1979)
as Hal Leonard
The Art of 'Spirited Away' (2003)
as Himself
A Fare to Remember (1999)
as Mickey
Change of Heart (2016)
as Dr. Charles Burke
Russell Madness (2015)
as Mick Vaughn
How Murray Saved Christmas (2014)
as Officer Bender (voice)
Forky Asks a Question: What Is Money? (2019)
as Hamm (voice)
Project: Puppies for Christmas (2019)
as Daniel Nilwater
Disneyland's 35th Anniversary Celebration (1990)
as Cliff Clavin
Disney's Magic in the Magic Kingdom (1988)
as Self
Our First Christmas (2008)
as Joe Noll
Tick Tock (2000)
as Clay Fairfield, P.I.
Dog's Best Friend (1997)
as Goat (voice)
The Story Behind 'Toy Story' (1996)
as Self
Pup Star: World Tour (2018)
as Grandpa Growl (voice)
Tiny Toy Stories (1996)
as Hamm (voice)
A Christmas Mystery (2014)
as Logan Walker
Titleist: Made in America (—)
Actor
What if... (2010)
as Mike the Angel
The Good Soldier (1981)
as Jimmy
Pup Star (2016)
as Mutt (voice)
The Santa Con (2014)
as Warden
Disney Through The Decades (2001)
Actor
Shifting Gears (2018)
as Conrad Baines
Likely Stories, Vol. 4 (1983)
as Jersey Cop #2
Fixing Pete (2012)
as Clayton
Going to the Chapel (1988)
as Walt Caruso
Forky Asks a Question: What Is a Friend? (2019)
as Hamm (voice)
Miracle in East Texas (2020)
as Dad Everett
The Frasier Story (1999)
as Self
Right of Way (1983)
as Policeman
In The Name of God (2013)
as Reverend Thomas
The Pennsylvania Miners' Story (2002)
as Thomas 'Tucker' Foy
Rating Notman (1982)
Actor
Grace of God (2014)
as Reverend Thomas