Credits

• 2026 · Jimmy as Louis B. Mayer
• 2025 · The Gettysburg Address as Noah Brooks (voice)
• 2024 · Y llegaron de noche as Carl Laemmle
• 2022 · Out of Office as
• 2022 · Cinderella: The Reunion, A Special Edition of 20/20 as Self
• 2021 · Broadway: Beyond the Golden Age as Self
• 2019 · Mad About You as Jason Alexander
• 2017 · Broadway: The Next Generation as Self
• 2016 · The Mark Lembeck Technique as Mark Lembeck
• 2016 · There's Something About Romcoms as Self
• 2016 · Tom and Jerry: Back to Oz as Mr. Bibb / The Nome King (voice)
• 2015 · China, Il The Musical as Harold
• 2015 · Big Time in Hollywood, Fl as Jason Alexander
• 2013 · Kirstie as Stanford Temple
• 2012 · National Lampoon's Another Dirty Movie as Self (uncredited)
• 2011 · China, IL as Harold (voice)
• 2011 · A Fairly Odd Movie: Grow Up, Timmy Turner! as Cosmo
• 2010 · Quantum Quest: A Cassini Space Odyssey as Moronic (voice)
• 2010 · Rock Slyde as Mailman Stan
• 2010 · The Marriage Ref as Self - Panelist
• 2009 · Meteor as Dr. Chetwyn
• 2007 · Jerry Seinfeld: Submarine Captain as Himself
• 2006 · Farce of the Penguins as Penguin on Belly (voice)
• 2006 · Rachael Ray as Self - Guest
• 2006 · Talkshow with Spike Feresten as
• 2005 · Earth to America as self
• 2004 · A Christmas Carol as Jacob Marley / Marley's Ghost
• 1999 · Larry David: Curb Your Enthusiasm as Self
• Future · Leo 2 as
• 2025 · Paddy Chayefsky: Collector of Words as Self
• 2025 · Stealing Pulp Fiction as Dr. Mendelbaum
• 2025 · The Electric State as Ted / Wingman
• 2024 · Rock, Paper, Scissors as Jonathan Fartjoke (voice)
• 2023 · Dick Van Dyke: 98 Years of Magic as Self - Performer
• 2023 · Leo as Jayda's Dad (voice)
• 2023 · History of the World: Part II as Maurice Cheeks
• 2022 · The Conspiracy as
• 2022 · Killing Me Softly with His Songs as Self
• 2022 · Dunston Checks Out as Jason Alexander (archival footage)
• 2021 · Star Trek: Prodigy as Doctor Noum (voice)
• 2021 · Star Trek: Prodigy as Counselor Noum (voice)
• 2021 · The Problem with Jon Stewart as Jeff Bezos
• 2021 · History of the Sitcom as Self - Actor
• 2021 · Celebrity Wheel of Fortune as Self - Contestant
• 2020 · The Rocky Horror Musical Live Stream as Narrator
• 2020 · Faith Based as Nicky Steele
• 2020 · Stars in the House as Self
• 2020 · Stars in the House as Self - Special Guest
• 2020 · My Boyfriend's Meds as Dr. Sternbach
• 2019 · Harley Quinn as Sy Borgman (voice)
• 2019 · The Movies That Made Us as Self
• 2018 · The Conners as Pastor Phil
• 2018 · The Portuguese Kid as Barry Dragonetti
• 2018 · Bucky and the Squirrels as Jason Alexander
• 2017 · Hit the Road as Ken Swallow
• 2017 · Young Sheldon as Gene Lundy
• 2017 · The Orville as Olix
• 2017 · Kody Kapow as Goji (voice)
• 2017 · The Truth Is in the Stars as Self
• 2017 · The Marvelous Mrs. Maisel as Asher Friedman
• 2017 · Dinner with Dad as Jason Alexander
• 2016 · Best Worst Thing That Ever Could Have Happened... as Self
• 2016 · For the Love of Spock as Self
• 2016 · The $100,000 Pyramid as Self
• 2016 · Match Game as Self - Panelist
• 2016 · To Tell the Truth as Self - Panelist
• 2016 · The Last Laugh as Self
• 2015 · The Grinder as Cliff Bemis
• 2015 · Larry Gaye: Renegade Male Flight Attendant as Larry's Dad
• 2015 · The Late Late Show with James Corden as Self
• 2015 · Misery Loves Comedy as Self
• 2015 · Wild Card as Pinky
• 2014 · Penn Zero: Part-Time Hero as Coach Wallace (voice)
• 2014 · How Murray Saved Christmas as Doc Holiday (voice)
• 2014 · Lucky Stiff as Vinnie Di Ruzzio
• 2014 · The Tom and Jerry Show as Rick (voice)
• 2014 · TripTank as Doctor (voice)
• 2014 · Late Night with Seth Meyers as Self
• 2013 · Hollywood Game Night as Self
• 2013 · Drunk History as William Tweed
• 2012 · Stars In Shorts as Sid Rosenthal
• 2012 · Comedians in Cars Getting Coffee as Self
• 2012 · Comedy Bang! Bang! as Inspector Gantlet
• 2012 · Say It Ain't Solo as Himself
• 2011 · The Voyages of Young Doctor Dolittle as Eugene (voice)
• 2011 · Talking Dead as Self
• 2011 · Dora the Explorer: Dora's Enchanted Forest Adventures as Owl (voice)
• 2011 · Franklin & Bash as Carter Lang
• 2011 · Harry's Law as Richard Cross
• 2010 · Not Your Time as Sid Rosenthal
• 2010 · Fish Hooks as Mr. Nibbles
• 2010 · Fish Hooks as Mr. Nibbles (voice)
• 2009 · The Cleveland Show as
• 2009 · Community as Mountain Man
• 2009 · Hachi: A Dog's Tale as Carl
• 2008 · Shatner's Raw Nerve as Self
• 2008 · Step It Up and Dance as
• 2007 · The Grand as Dr. Yakov Achmed
• 2007 · Thank God You're Here as Self
• 2006 · Comedy Central Roast of William Shatner as Self - Roastmaster
• 2006 · How to Go Out on a Date in Queens as Johnny
• 2006 · Snoop Dogg's Hood of Horror as British Record Mogul
• 2006 · Ira & Abby as Dr. Morris Saperstein
• 2006 · Where My Dogs At? as
• 2006 · The New Adventures of Old Christine as Dr. Palmer
• 2005 · Criminal Minds as Prof. Rothchild
• 2005 · Everybody Hates Chris as
• 2005 · The Aristocrats as Self
• 2005 · Robot Chicken as Krampus (voice)
• 2005 · American Dad! as Mr. Orlando (voice)
• 2005 · American Dad! as Sal (voice)
• 2005 · The Late Late Show with Craig Ferguson as Self
• 2004 · The Seinfeld Story as Self
• 2004 · Seinfeld: How It Began as Self/George Costanza
• 2004 · Listen Up! as Tony Kleinman
• 2004 · The Tony Danza Show as Self - Guest
• 2003 · Two and a Half Men as Dr. Goodman
• 2003 · The Ellen DeGeneres Show as Self
• 2003 · The Very Best of America's Funniest Comedians as Self (archive footage)
• 2003 · 101 Dalmatians II: Patch's London Adventure as Lightning (voice)
• 2003 · Real Time with Bill Maher as Self
• 2003 · Jimmy Kimmel Live! as Self
• 2002 · The Man Who Saved Christmas as A.C. Gilbert
• 2002 · The Twilight Zone as Patient
• 2002 · Monk as Marty Eels
• 2002 · The Hunchback of Notre Dame II as Gargoyle Hugo (voice)
• 2001 · Being 'Shallow Hal' as Self
• 2001 · Shallow Hal as Mauricio
• 2001 · Bob Patterson as Bob Patterson
• 2001 · Good Day Live as Self
• 2001 · The Legend of Tarzan as Zutho (voice)
• 2001 · Primetime Glick as
• 2001 · The Trumpet of the Swan as Father (voice)
• 2001 · Critics Choice Awards as Self
• 2001 · Disney's House of Mouse as
• 2000 · Curb Your Enthusiasm as Jason Alexander
• 2000 · The Huntress as
• 2000 · The Adventures of Rocky & Bullwinkle as Boris
• 2000 · Son of the Beach as
• 2000 · Let's Rap Fire Safety as
• 2000 · Malcolm in the Middle as Leonard
• 1999 · Ultimate Trek: Star Trek's Greatest Moments as Host
• 1999 · The N.Y. Friars Club Roast of Jerry Stiller as Self - Roastmaster
• 1999 · Love and Action in Chicago as Frank Bonner
• 1999 · Madeline: Lost in Paris as Uncle Horst / Henri (voice)
• 1999 · The Late Late Show with Craig Kilborn as Self - Guest
• 1999 · Sideshow: Alive on the Inside as Narrator
• 1999 · Dilbert as Catbert (voice)
• 1999 · Jingle Bells as Elf (Voice)
• 1998 · Hollywood Squares as Self - Panelist
• 1998 · Hollywood Squares as Self
• 1998 · Hercules as Poseidon
• 1998 · Hercules as Poseidon (voice)
• 1998 · Denial as Art Witz
• 1998 · Titey as Titey (voice)
• 1997 · Cinderella as Lionel
• 1997 · Love! Valour! Compassion! as Buzz Hauser
• 1996 · The Hunchback of Notre Dame as Gargoyle Hugo (voice)
• 1996 · Muppets Tonight as Self
• 1996 · Remember WENN as Alan Ballinger
• 1996 · Dunston Checks In as Robert Grant
• 1996 · Sex, Censorship and the Silver Screen as Quote Reader
• 1995 · Bye Bye Birdie as Albert J. Peterson
• 1995 · The Last Supper as Anti-Enviroment
• 1995 · For Better or Worse as Michael Makeshift
• 1995 · Star Trek: Voyager as Kurros
• 1995 · A Tribute to Stephen Sondheim as
• 1994 · Friends as Earl
• 1994 · Blankman as Mr. Stone
• 1994 · North as North's Dad
• 1994 · The Return of Jafar as Abis Mal - the Chief of the Thieves (voice)
• 1994 · Down on the Waterfront as
• 1994 · The Paper as Marion Sandusky
• 1994 · Duckman as Duckman (voice)
• 1994 · Aladdin as Abis Mal (voice)
• 1994 · Aladdin as Captain Albatross (voice)
• 1994 · Aladdin as Abis Mal / Abnor Mal (voice)
• 1993 · Coneheads as Larry Farber
• 1993 · Sexual Healing as Frank
• 1993 · For Goodness Sake as Electronics Store Customer
• 1992 · The Larry Sanders Show as Jason Alexander
• 1992 · I Don't Buy Kisses Anymore as Bernie Fishbine
• 1991 · Dinosaurs as Grown Baby (voice)
• 1991 · Dinosaurs as Stu (voice)
• 1991 · Dinosaurs as Gus Molehill (voice)
• 1991 · Dinosaurs as The Job Wizard (voice)
• 1991 · Dinosaurs as General H. Norman Conquest (voice)
• 1991 · Dinosaurs as Sexual Harris (voice)
• 1991 · Dinosaurs as UFO! Host / Announcer (voice)
• 1990 · Jacob's Ladder as Geary
• 1990 · White Palace as Neil
• 1990 · Dream On as Randall Townsend
• 1990 · Pretty Woman as Philip Stuckey
• 1989 · The Simpsons as Bourbon Verlander (voice)
• 1989 · Seinfeld as George Costanza
• 1988 · Favorite Son as Chris Van Allen
• 1988 · LIVE with Kelly and Mark as Self - Guest
• 1987 · Everything's Relative as Julian Beeby
• 1986 · Brighton Beach Memoirs as Pool Player #1
• 1986 · The Mosquito Coast as Hardware Clerk
• 1986 · Rockabye as Lt. Ernest Foy
• 1984 · E/R as Harold Stickley
• 1984 · E/R as
• 1983 · Reading Rainbow as Self - Narrator (voice)
• 1982 · Newhart as
• 1982 · Late Night with David Letterman as Self
• 1981 · Senior Trip as Pete
• 1981 · The Burning as Dave
• 1980 · A Capitol Fourth as Self
• 1975 · Saturday Night Live as Self - Host
• 1975 · Saturday Night Live as Self - Cameo (uncredited)
• 1956 · Tony Awards as Self - Presenter
• 1949 · The Emmy Awards as Self
• Future · The Sisters Rosensweig as Mervyn
• Future · Saturday TV Funhouse as Titey (voice)