2024
The Exorcism as Father Conor2022
Julia as Paul Child2020
Stars in the House as Self2019
The Lavender Scare as Dr. Franklin E. Kameny (voice)2017
Wet Hot American Summer: Ten Years Later as Henry Neumann2017
When We Rise as Dr. Jones2016
Must See TV: An All Star Tribute to James Burrows as Self2015
Hurricane of Fun: The Making of Wet Hot as Self2015
Wet Hot American Summer: First Day of Camp as Henry Neumann2014
Late Night with Seth Meyers as Self2012
Vanya and Sonia and Masha and Spike as Vanya2010
The Perfect Host as Warwick Wilson2010
Sondheim! The Birthday Concert as Self - Host2009
The Good Wife as Frank Prady2009
Forever Plaid as The Narrator2009
Stingray Sam as Narrator2008
Monty Python Conquers America as Self2007
The Graham Norton Show as Self2006
The Megan Mullally Show as Self - Guest2006
The Amazing Screw-On Head as Emperor Zombie (voice)2006
World's Greatest Stand Up: Volume One as self2005
Celebrity Mix as Self (archive footage)2004
The Tony Danza Show as Self2004
Hellboy as Abe Sapien (voice) (uncredited)2004
The Celebrity Apprentice as Not available2004
Frasier: Analyzing the Laughter as Niles Crane2003
Down with Love as Peter MacMannus2003
Gary the Rat as Addison2003
The Shakespeare Sessions as Not available2002
Treasure Planet as Doctor Doppler (voice)2002
Full Frontal as Carl2002
Laud Weiner as Laud Weiner2001
Osmosis Jones as Drix (voice)2001
On the Edge as Barney (segment "Happy Birthday")2001
Chain of Fools as Mr. Kerner2001
Wet Hot American Summer as Henry2000
The Tangerine Bear: Home in Time for Christmas! as Bird (voice)2000
Titus as Jerry October2000
Isn't She Great as Michael Hastings1999
The Late Late Show with Craig Kilborn as Self - Guest1999
Jackie's Back! as Perry (The Deaf Rehearsal Pianist)1999
The Mating Habits of the Earthbound Human as The Narrator1998
Hercules as Daedalus1998
Hercules as Daedalus (voice)1998
A Bug's Life as Slim (voice)1997
The View as Self1996
Star Trek: 30 Years and Beyond as Niles Crane1995
The Outer Limits as Dr. Jack Henson1995
Caroline in the City as Dr. Niles Crane1995
Caroline in the City as Jimmy Callahan1995
Happily Ever After: Fairy Tales for Every Child as Puss (voice)1995
Nixon as John Dean1995
The Adventures of Hyperman as Not available1995
The World of James Bond as Not available1994
Wolf as Roy McCallister1993
Frasier as Niles Crane1993
Late Night with Conan O'Brien as Self - Guest1993
Addams Family Values as Delivery Room Doctor1993
GMTV as Self1993
Sleepless in Seattle as Dennis Reed1992
The Tonight Show with Jay Leno as Self1992
The Powers That Be as Theodore Van Horne1991
The Fisher King as Lou Rosen1991
Little Man Tate as Garth Emmerick1990
Dream On as Jerry Dorfer1989
The Simpsons as Cecil Terwilliger (voice)1989
The Simpsons as Felix (voice)1989
Vampire's Kiss as Theater Guy1988
LIVE with Kelly and Mark as Not available1988
Bright Lights, Big City as Bartender at Fashion Show1988
Rocket Gibraltar as Monsieur Henri1985
Spenser: For Hire as Not available1985
Moving Violations as Immigration Officer1975
Saturday Night Live as Self - Host1956
Tony Awards as Self - PresenterNaN
Mouse as Not available1988
Crossing Delancey as Mark1988
Knightwatch as Gibson1988
The Appointments of Dennis Jennings as Businessman1952
Today as Self1949
The Emmy Awards as Self