| 2022 | The Jennifer Hudson ShowSeries | Self | 41 |
| 2022 | Weird: The Al Yankovic StoryMovie | Waiter | 41 |
| 2022 | Beauty and the Beast: A 30th CelebrationMovie | Beast / Prince Adam | 41 |
| 2020 | The Disney Family SingalongMovie | Self - Performer | 39 |
| 2020 | The Not-Too-Late Show with ElmoSeries | Self | 39 |
| 2019 | The Kelly Clarkson ShowSeries | Self | 38 |
| 2019 | David Foster: Off the RecordMovie | Self | 38 |
| 2019 | Sesame Street: 50 Years and CountingMovie | Self (archive footage) | 38 |
| 2018 | American IdolSeries | Self | 37 |
| 2018 | The Good CopSeries | Tony Caruso Jr. | 37 |
| 2018 | Mickey's 90th SpectacularMovie | Self - Performance | 37 |
| 2018 | Silent Night: A Song for the WorldMovie | Self | 37 |
| 2017 | Julie's GreenroomSeries | — | 36 |
| 2016 | Full Frontal with Samantha BeeSeries | Self | 35 |
| 2016 | Michael McIntyre's Big ShowSeries | Self - Interviewed Guest | 35 |
| 2016 | The HollarsMovie | Reverend Dan | 35 |
| 2015 | The Late Show with Stephen ColbertSeries | — | 34 |
| 2015 | Life in PiecesSeries | Ian | 34 |
| 2015 | The Late Late Show with James CordenSeries | Self - Guest | 34 |
| 2015 | Crazy Ex-GirlfriendSeries | Josh Groban | 34 |
| 2015 | The MuppetsSeries | Self | 34 |
| 2014 | Last Week Tonight with John OliverSeries | Self | 33 |
| 2014 | The Tonight Show Starring Jimmy FallonSeries | Self | 33 |
| 2014 | Late Night with Seth MeyersSeries | Self - Guest | 33 |
| 2014 | Muppets Most WantedMovie | Maximum Security Prisoner | 33 |
| 2013 | Hollywood Game NightSeries | Self | 32 |
| 2013 | The Crazy OnesSeries | Danny Chase | 32 |
| 2012 | Comedy Bang! Bang!Series | Self | 31 |
| 2011 | Crazy, Stupid, Love.Movie | Richard | 30 |
| 2010 | Who Do You Think You Are?Series | Self | 29 |
| 2010 | MasterclassSeries | Self | 29 |
| 2009 | GleeSeries | Josh Groban | 28 |
| 2009 | Parks and RecreationSeries | Josh Groban | 28 |
| 2009 | Watch What Happens Live with Andy CohenSeries | Self - Guest | 28 |
| 2009 | SkavlanSeries | Self - Guest | 28 |
| 2009 | Chris Botti in BostonMovie | Self | 28 |
| 2009 | We Are One: The Obama Inaugural Celebration at the Lincoln MemorialMovie | Self | 28 |
| 2008 | NPR Tiny Desk ConcertsSeries | Self | 27 |
| 2007 | The Graham Norton ShowSeries | Self | 26 |
| 2007 | Tim and Eric Awesome Show, Great Job!Series | Self | 26 |
| 2007 | The Alan Titchmarsh ShowSeries | Self | 26 |
| 2007 | Walt Disney World Christmas Day ParadeMovie | Self | 26 |
| 2007 | Fredag hela veckanSeries | Self - Music guest | 26 |
| 2007 | Any Dream Will DoSeries | Self | 26 |
| 2005 | It's Always Sunny in PhiladelphiaSeries | Josh Groban | 24 |
| 2005 | American Dad!Series | Daniel (voice) | 24 |
| 2005 | The OfficeSeries | Walter Bernard, Jr. | 24 |
| 2005 | Live 8Movie | Self | 24 |
| 2004 | CSI: NYSeries | Josh Groban | 23 |
| 2004 | Willkommen bei Carmen NebelSeries | Self | 23 |
| 2004 | Open AccessSeries | Self | 23 |
| 2003 | Jimmy Kimmel Live!Series | Self | 22 |
| 2003 | The Ellen DeGeneres ShowSeries | Self | 22 |
| 2002 | American IdolSeries | Self | 21 |
| 2002 | Live from E!Series | Self | 21 |
| 2001 | Star AcademySeries | Self | 20 |
| 1998 | Vivement dimancheSeries | Self | 17 |
| 1997 | Ally McBealSeries | Malcolm Wyatt | 16 |
| 1997 | The ViewSeries | Self | 16 |
| 1996 | Never Mind the BuzzcocksSeries | Self | 15 |
| 1994 | Room 101Series | Self | 13 |
| 1993 | GMTVSeries | Self | 12 |
| 1992 | The Tonight Show with Jay LenoSeries | Self | 11 |
| 1989 | The SimpsonsSeries | Professor Frink's Singing Voice (voice) | 8 |
| 1988 | LIVE with Kelly and MarkSeries | Self | 7 |
| 1981 | Wetten, dass..?Series | Self | — |
| 1979 | NDR Talk ShowSeries | Self | — |
| 1974 | 3 nach 9Series | Self | — |
| 1953 | The OscarsSeries | Self - Performer | — |
