Filmography133 titles
Importing filmography…
| Year | Title | Character | Age at release |
|---|---|---|---|
| 2026 | Sunny DancerMovie | Patrick | 53 |
| 2026 | I Changed My Mind with Dan SouzaSeries | Self - Guest | 53 |
| 2025 | Dexter: ResurrectionSeries | Lowell / The Tattoo Collector | 52 |
| 2024 | Doctor Who at the PromsMovie | The Toymaker (archive footage) | 51 |
| 2024 | Group TherapyMovie | Self - Moderator | 51 |
| 2024 | Dolly Parton's Pet GalaMovie | — | 51 |
| 2023 | Drag Me to DinnerSeries | Self - Judge | 50 |
| 2022 | The Unbearable Weight of Massive TalentMovie | Richard Fink | 49 |
| 2022 | How I Met Your FatherSeries | Barney Stinson | 49 |
| 2022 | UncoupledSeries | Michael Lawson | 49 |
| 2021 | The Matrix ResurrectionsMovie | The Analyst | 48 |
| 2021 | 8-Bit ChristmasMovie | Adult Jake Doyle / Narrator | 48 |
| 2020 | Home Movie: The Princess BrideSeries | Westley | 47 |
| 2020 | Visible: Out on TelevisionSeries | Self - Narrator (voice) | 47 |
| 2020 | Get Organized with The Home EditSeries | — | 47 |
| 2019 | The Kelly Clarkson ShowSeries | Self | 46 |
| 2019 | Still Laugh-In: The Stars CelebrateMovie | Self | 46 |
| 2019 | Today with Jenna & SheinelleSeries | Self - Guest | 46 |
| 2018 | Mickey's 90th SpectacularMovie | Self | 45 |
| 2017 | At Home with Amy SedarisSeries | Neil Patrick Harris | 44 |
| 2017 | A Series of Unfortunate EventsSeries | Count Olaf | 44 |
| 2017 | DownsizingMovie | Jeff Lonowski | 44 |
| 2017 | Carpool Karaoke: The SeriesSeries | Self | 44 |
| 2017 | Mystery Science Theater 3000Series | Neville LaRoy | 44 |
| 2017 | The Words That Built AmericaMovie | Self - Reader: Declaration of Independence | 44 |
| 2016 | WIRED's Autocomplete InterviewsSeries | Self - Guest | 43 |
| 2015 | Hot OnesSeries | Self | 42 |
| 2015 | Celebrity Family FeudSeries | Self | 42 |
| 2015 | In Their Own WordsSeries | Self | 42 |
| 2014 | Gone GirlMovie | Desi Collings | 41 |
| 2014 | The Tonight Show Starring Jimmy FallonSeries | Self | 41 |
| 2014 | Late Night with Seth MeyersSeries | Self | 41 |
| 2014 | A Million Ways to Die in the WestMovie | Foy | 41 |
| 2014 | Off Camera with Sam JonesSeries | Self | 41 |
| 2013 | The Smurfs 2Movie | Patrick Winslow | 40 |
| 2013 | Beat Bobby FlaySeries | Self | 40 |
| 2013 | Cloudy with a Chance of Meatballs 2Movie | Steve (voice) | 40 |
| 2013 | The Out ListMovie | Himself | 40 |
| 2012 | Robot Chicken: DC Comics SpecialMovie | Two-Face / Black Manta (voice) | 39 |
| 2012 | Finding Your RootsSeries | Self | 39 |
| 2012 | American ReunionMovie | Celebrity Dance-Off Host | 39 |
| 2011 | American Horror StorySeries | Chester Creb | 38 |
| 2011 | BeastlyMovie | Will Fratalli | 38 |
| 2011 | The SmurfsMovie | Patrick Winslow | 38 |
| 2011 | The MuppetsMovie | Neil Patrick Harris | 38 |
| 2011 | Brain GamesSeries | Himself - Host | 38 |
| 2011 | A Very Harold & Kumar ChristmasMovie | Neil Patrick Harris | 38 |
| 2011 | CompanyMovie | Robert | 38 |
| 2010 | Batman: Under the Red HoodMovie | Nightwing (voice) | 37 |
| 2010 | Adventure TimeSeries | Prince Gumball (voice) | 37 |
| 2010 | The Best and the BrightestMovie | Jeff | 37 |
| 2010 | Sesame Street: 40 Years of Sunny DaysMovie | The Shoe Fairy (uncredited) (archive footage) | 37 |
| 2009 | GleeSeries | Bryan Ryan | 36 |
| 2009 | Watch What Happens Live with Andy CohenSeries | Self - Guest | 36 |
| 2009 | RuPaul's Drag RaceSeries | Self - Guest Judge | 36 |
| 2009 | Late Night with Jimmy FallonSeries | Self | 36 |
| 2009 | Cloudy with a Chance of MeatballsMovie | Steve (voice) | 36 |
| 2009 | Beyond All BoundariesMovie | 1st Lt. David Hettema / Sgt. William Manchester | 36 |
| 2009 | Top Chef MastersSeries | Himself - Guest Judge | 36 |
| 2008 | Justice League: The New FrontierMovie | Barry Allen / The Flash (voice) | 35 |
| 2008 | Batman: The Brave and the BoldSeries | Music Meister (voice) | 35 |
| 2008 | The Penguins of MadagascarSeries | Dr. Blowhole (voice) | 35 |
| 2007 | The Graham Norton ShowSeries | Self | 34 |
| 2007 | Eloise Goes to SchoolMovie | — | 34 |
| 2006 | Rachael RaySeries | — | 33 |
| 2006 | The Megan Mullally ShowSeries | Self - Guest | 33 |
| 2006 | Me, EloiseSeries | Philip (voice) | 33 |
| 2005 | Numb3rsSeries | Ethan Burdick | 32 |
| 2005 | Robot ChickenSeries | Executive / Harvey Dent / Two-Face / Three-Face / Four-Face (voice) | 32 |
| 2005 | The Colbert ReportSeries | — | 32 |
| 2005 | How I Met Your MotherSeries | Barney Stinson | 32 |
| 2005 | The Late Late Show with Craig FergusonSeries | Self | 32 |
| 2005 | The Reichen ShowSeries | Self - Guest | 32 |
| 2005 | Disney Heroes Volume 1Movie | Moyo (voice) | 32 |
| 2005 | SerenityMovie | Screaming Reaver (uncredited) | 32 |
| 2004 | Jack & BobbySeries | — | 31 |
| 2004 | Harold & Kumar Go to White CastleMovie | Neil Patrick Harris | 31 |
| 2004 | The Tony Danza ShowSeries | Self - Guest | 31 |
| 2003 | Jimmy Kimmel Live!Series | Self | 30 |
| 2003 | The Ellen DeGeneres ShowSeries | Self | 30 |
| 2003 | Spider-Man: The New Animated SeriesSeries | Peter Parker / Spider-Man (voice) | 30 |
| 2003 | Spike TV VGA Video Game AwardsSeries | — | 30 |
| 2002 | Undercover BrotherMovie | Lance | 29 |
| 2002 | Death from Above: The Making of 'Starship Troopers'Movie | Himself | 29 |
| 2002 | The Making of Sweeney Todd at the San Francisco SymphonyMovie | Self | 29 |
| 2001 | Law & Order: Criminal IntentSeries | John Tagman | 28 |
| 2001 | Justice LeagueSeries | Ray Thompson (voice) | 28 |
| 2001 | Sweeney Todd: The Demon Barber of Fleet Street in ConcertMovie | Tobias | 28 |
| 2001 | The Legend of TarzanSeries | Moyo (voice) | 28 |
| 2000 | EdSeries | Joe Baxter | 27 |
| 2000 | Static ShockSeries | Replay / Johnny Morrow (voice) | 27 |
| 2000 | Son of the BeachSeries | — | 27 |
| 2000 | Big BrotherSeries | Self - Celebrity Guest | 27 |
| 1999 | Family GuySeries | Barney Stinson (voice) | 26 |
| 1999 | Joan of ArcSeries | The Dauphin | 26 |
| 1999 | The Early ShowSeries | Self | 26 |
| 1998 | Will & GraceSeries | Bill | 25 |
| 1998 | The PropositionMovie | Roger Martin | 25 |
| 1998 | The Christmas WishMovie | Will Martin | 25 |
| 1997 | The ViewSeries | Self | 24 |
| 1997 | Starship TroopersMovie | Colonel Carl Jenkins | 24 |
| 1996 | The Daily ShowSeries | Self | 23 |
| 1995 | The Outer LimitsSeries | Howie Morrison | 22 |
| 1995 | Animal RoomMovie | Arnold Mosk | 22 |
| 1995 | My AntoniaMovie | Jimmy Burden | 22 |
| 1995 | Legacy of Sin: The William Coit StoryMovie | William Coit | 22 |
| 1995 | Not Our SonMovie | Paul Keller | 22 |
| 1994 | Touched by an AngelSeries | Jonas | 21 |
| 1993 | Homicide: Life on the StreetSeries | Alan Schack | 20 |
| 1993 | Sudden FuryMovie | Brian Hannigan | 20 |
| 1993 | Late Show with David LettermanSeries | Self - Guest | 20 |
| 1993 | For Our ChildrenMovie | Self | 20 |
| 1992 | Time Out: The Truth About HIV, AIDS and YouMovie | Self | 19 |
| 1992 | Capitol CrittersSeries | Max (voice) | 19 |
| 1991 | The Best of Disney: 50 Years of MagicMovie | Self | 18 |
| 1990 | BlossomSeries | — | 17 |
| 1990 | The Earth Day SpecialMovie | Doogie Howser | 17 |
| 1990 | Captain Planet and the PlaneteersSeries | Todd Andrews | 17 |
| 1989 | The SimpsonsSeries | Neil Patrick Harris (voice) | 16 |
| 1989 | Quantum LeapSeries | Mike Hammond | 16 |
| 1989 | Home Fires BurningMovie | Lonnie Tibbettes | 16 |
| 1989 | Doogie Howser, M.D.Series | Doogie Howser | 16 |
| 1988 | LIVE with Kelly and MarkSeries | Self - Guest | 15 |
| 1988 | Clara's HeartMovie | David Hart | 15 |
| 1988 | Purple People EaterMovie | Billy Johnson | 15 |
| 1985 | Larry King LiveSeries | Self | 12 |
| 1984 | Murder, She WroteSeries | Tommy Remsen | 11 |
| 1984 | Jeopardy!Series | Self | 11 |
| 1981 | Entertainment TonightSeries | Self | 8 |
| 1975 | Saturday Night LiveSeries | Self - Host | 2 |
| 1969 | Sesame StreetSeries | — | — |
| 1953 | The OscarsSeries | Host | — |
| 1951 | Hallmark Hall of FameSeries | Lonnie | — |