Filmography136 titles
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2026 | Toy Story 5Movie | Smarty Pants (voice) | 63 |
| 2026 | LorneMovie | Self | 63 |
| 2026 | Mel Brooks: The 99 Year Old Man!Series | Self - Comedian | 63 |
| 2026 | Reality Check: Inside America's Next Top ModelSeries | Self Host, Late Night with Conan O'Brien (archive footage) | 63 |
| 2025 | John Candy: I Like MeMovie | Self - Comedian & Podcast Host | 62 |
| 2025 | Ladies & Gentlemen... 50 Years of SNL MusicMovie | Self - SNL Writer 1988 - 1991 | 62 |
| 2025 | If I Had Legs I'd Kick YouMovie | Therapist | 62 |
| 2025 | Everybody's Live with John MulaneySeries | Self (Pre-Tape Segment) (uncredited) | 62 |
| 2025 | Starring Dick Van DykeMovie | Self | 62 |
| 2025 | Please Don't Destroy LIVE: Full Sketch Special / Tour DocMovie | Himself | 62 |
| 2025 | MutineerMovie | — | 62 |
| 2025 | Downey Wrote ThatMovie | Self | 62 |
| 2024 | Mr. McMahonSeries | Self (archive footage) | 61 |
| 2024 | Conan O'Brien Must GoSeries | Self - Host | 61 |
| 2024 | Outstanding: A Comedy RevolutionMovie | Self (archive footage) (uncredited) | 61 |
| 2024 | BRATSMovie | Self (archival footage) (uncredited) | 61 |
| 2024 | Return of the King: The Fall and Rise of Elvis PresleyMovie | Self | 61 |
| 2023 | Albert Brooks: Defending My LifeMovie | Self | 60 |
| 2023 | Please Don't Destroy: The Treasure of Foggy MountainMovie | Farley | 60 |
| 2023 | SmartLess: On the RoadSeries | — | 60 |
| 2022 | Show Business Is My Life (But I Can't Prove It)Movie | Self | 59 |
| 2022 | Weird: The Al Yankovic StoryMovie | Andy Warhol | 59 |
| 2022 | Meat Loaf - A Celebration Of LifeMovie | Self (archive footage) | 59 |
| 2022 | MurdervilleSeries | Conan O'Brien | 59 |
| 2021 | The Story of Late NightSeries | Self | 58 |
| 2020 | You Cannot Kill David ArquetteMovie | Self (archive footage) | 57 |
| 2020 | History 101Series | Self (archive footage) | 57 |
| 2020 | BecomingMovie | Self | 57 |
| 2019 | DadsMovie | Self | 56 |
| 2018 | KiddingSeries | Conan O'Brien | 55 |
| 2018 | What the FitSeries | Self - Guest | 55 |
| 2018 | The Zen Diaries of Garry ShandlingSeries | Self | 55 |
| 2017 | This Is Bob Hope...Movie | Self | 54 |
| 2017 | The Lego Batman MovieMovie | The Riddler (voice) | 54 |
| 2017 | Sandy WexlerMovie | Testimonial | 54 |
| 2017 | The History of ComedySeries | Self | 54 |
| 2016 | The Last LaughMovie | Self (archive footage) (uncredited) | 53 |
| 2016 | Happy Once AgainSeries | Goldfish/ as himself | 53 |
| 2016 | George Fest: A Night to Celebrate the Music of George HarrisonMovie | Self | 53 |
| 2016 | How to Lose Weight in 4 Easy Steps!Movie | Craig | 53 |
| 2016 | Laurie Kilmartin: 45 Jokes About My Dead DadMovie | Self | 53 |
| 2015 | The Late Show with Stephen ColbertSeries | Self - Guest | 52 |
| 2015 | Hot OnesSeries | Self | 52 |
| 2015 | Being CanadianMovie | Self | 52 |
| 2015 | Thank You, Del: The Story of the Del Close MarathonMovie | Self | 52 |
| 2014 | Silicon ValleySeries | Conan O'Brien | 51 |
| 2014 | The Tonight Show Starring Jimmy FallonSeries | Self | 51 |
| 2014 | Late Night with Seth MeyersSeries | Self - Guest | 51 |
| 2014 | Chicken Shop DateSeries | Self - Guest | 51 |
| 2013 | Now You See MeMovie | Conan O’Brien | 50 |
| 2013 | The Secret Life of Walter MittyMovie | Conan O'Brien | 50 |
| 2013 | MaronSeries | Himself | 50 |
| 2013 | Inequality for AllMovie | Self (archive footage) | 50 |
| 2013 | Clear HistoryMovie | Conan O'Brien | 50 |
| 2013 | Batman: The Dark Knight Returns, Part 2Movie | David Endocrine (voice) | 50 |
| 2013 | Batman: The Dark Knight ReturnsMovie | David Endochrine (voice) | 50 |
| 2013 | Ke$ha: My Crazy Beautiful LifeSeries | Self | 50 |
| 2012 | ThunderstruckMovie | Conan O'Brien (uncredited) | 49 |
| 2012 | Inside ComedySeries | Self | 49 |
| 2012 | Johnny Carson: King of Late NightMovie | Self | 49 |
| 2012 | Vanilla Ice ArchiveMovie | Self (archive footage) | 49 |
| 2011 | Web TherapySeries | Conan O'Brien | 48 |
| 2011 | Conan O'Brien Can't StopMovie | Self | 48 |
| 2011 | Talking DeadSeries | Himself | 48 |
| 2011 | Public SpeakingMovie | Self (archive footage) | 48 |
| 2010 | Love & Other DrugsMovie | Self (archive footage) (uncredited) | 47 |
| 2010 | I'm Still HereMovie | Conan O'Brien (archive footage) (uncredited) | 47 |
| 2010 | The Simpsons 20th Anniversary Special - In 3D! On Ice!Movie | Self | 47 |
| 2009 | Watch What Happens Live with Andy CohenSeries | Self - Guest | 46 |
| 2009 | Late Night with Jimmy FallonSeries | Self | 46 |
| 2009 | The Tonight Show with Conan O'BrienSeries | Self - Host | 46 |
| 2008 | Between Two Ferns with Zach GalifianakisSeries | Self | 45 |
| 2008 | The Great Buck HowardMovie | Conan O’Brien | 45 |
| 2008 | The Penguins of MadagascarSeries | Kuchikukan (voice) | 45 |
| 2008 | Web TherapySeries | Conan O'Brien | 45 |
| 2007 | Robot Chicken: Star WarsMovie | Zuckuss / Ponda Baba's Boss (voice) | 44 |
| 2006 | 30 RockSeries | Conan O'Brien | 43 |
| 2006 | Queer Duck: The MovieMovie | Conan O'Brien (voice) | 43 |
| 2005 | BewitchedMovie | Conan O'Brien | 42 |
| 2005 | The Colbert ReportSeries | — | 42 |
| 2005 | How I Met Your MotherSeries | Bar Patron (uncredited) | 42 |
| 2005 | The OfficeSeries | Conan O'Brien | 42 |
| 2005 | Earth to AmericaMovie | Self | 42 |
| 2005 | Saturday Night Live in the '80s: Lost and FoundMovie | Self | 42 |
| 2004 | Sesame Street: What's the Name of That Song?Movie | Self (archive footage) | 41 |
| 2004 | O'GradySeries | — | 41 |
| 2003 | Arrested DevelopmentSeries | Conan O'Brien | 40 |
| 2003 | Jimmy Kimmel Live!Series | Self - Guest | 40 |
| 2003 | Can't Buy Me Lunch: Another Look at The RutlesMovie | Self - Interviewee | 40 |
| 2003 | Late Night with Conan O'Brien: 10th Anniversary SpecialMovie | Self | 40 |
| 2003 | Comedy Central RoastsSeries | Self | 40 |
| 2003 | Comedy Central Roast of Denis LearyMovie | Self | 40 |
| 2002 | NBC 75th Anniversary SpecialMovie | Self | 39 |
| 2002 | The OsbournesSeries | Self | 39 |
| 2001 | Primetime GlickSeries | — | 38 |
| 2001 | Vanilla SkyMovie | Conan O'Brien | 38 |
| 2001 | Pootie TangMovie | Conan O’Brien (uncredited) | 38 |
| 2001 | America | A Tribute to HeroesMovie | Self | 38 |
| 2001 | Porn Star: The Legend of Ron JeremyMovie | Self (archive footage) | 38 |
| 2001 | StorytellingMovie | Himself | 38 |
| 2001 | 50 Years of NBC Late NightMovie | Self - Host | 38 |
| 2000 | Curb Your EnthusiasmSeries | Conan O'Brien | 37 |
| 2000 | DAGSeries | Conan O'Brien (uncredited) | 37 |
| 1999 | Family GuySeries | Conan O'Brien (voice) | 36 |
| 1999 | FuturamaSeries | Conan O'Brien | 36 |
| 1999 | Mark Twain PrizeSeries | Self | 36 |
| 1998 | LateLineSeries | — | 35 |
| 1998 | The Entertainment BizSeries | Self | 35 |
| 1998 | Sesame Street: Elmopalooza!Movie | Self (uncredited) | 35 |
| 1998 | Tomorrow NightMovie | Himself | 35 |
| 1997 | Stargate SG-1Series | — | 34 |
| 1997 | The ViewSeries | Self | 34 |
| 1997 | Veronica's ClosetSeries | Conan O'Brien | 34 |
| 1997 | The Chris Rock ShowSeries | Self | 34 |
| 1996 | Arli$$Series | Conan O'Brien | 33 |
| 1996 | Spin CitySeries | Conan O'Brien | 33 |
| 1996 | The Daily ShowSeries | Self | 33 |
| 1996 | The Rosie O'Donnell ShowSeries | Self | 33 |
| 1995 | The Single GuySeries | Cameron Duncan | 32 |
| 1995 | National Lampoon's Favorite Deadly SinsMovie | Self (uncredited) | 32 |
| 1995 | Dr. Katz, Professional TherapistSeries | Conan (voice) | 32 |
| 1994 | Space Ghost Coast to CoastSeries | Self | 31 |
| 1994 | Inside the Actors StudioSeries | — | 31 |
| 1993 | Late Show with David LettermanSeries | Self - Guest | 30 |
| 1992 | MTV Movie & TV AwardsSeries | Self / Host | 29 |
| 1992 | The Tonight Show with Jay LenoSeries | Self | 29 |
| 1989 | The SimpsonsSeries | Conan O'Brien (voice) | 26 |
| 1986 | American MastersSeries | Self - Interviewee | 23 |
| 1975 | Saturday Night LiveSeries | Self - Cameo (uncredited) | 12 |
| 1975 | Good Morning AmericaSeries | Self - Guest | 12 |
| 1969 | Sesame StreetSeries | — | 6 |
| 1968 | The Dick Cavett ShowSeries | Self - Guest | 5 |
| 1968 | 60 MinutesSeries | Self | 5 |
| 1962 | The Late Late ShowSeries | Self | — |
| 1953 | The OscarsSeries | Self - Host | — |
| 1949 | The Emmy AwardsSeries | Self | — |