| Year | 
Title | 
Role | 
Notes
 | 
| 1985 | 
Two Fathers' Justice | 
District Attorney Turpin | 
Television film
 | 
| 1987 | 
Hooperman | 
Reindeer | 
Episode: "Deck the Cell with Bars of Folly"
 | 
| Bennett Brothers | 
Richard Bennett | 
Television film
 | 
| 1988 | 
My Sister Sam | 
Lang | 
Episode: "The Art of Love"
 | 
| Mr. Belvedere | 
Joe | 
Episode: "Marsha's Secret"
 | 
| 1989 | 
Empty Nest | 
Elton Sexton | 
Episode: "A Life in the Day"
 | 
| Unsub | 
Jimmy Bello | 
8 episodes
 | 
| 21 Jump Street | 
Caller (voice) | 
Episode: "Next Victim"
 | 
| Anything but Love | 
Bradley | 
Episode: "Just the Facts, Ma'am"
 | 
| 1990–1991 | 
Carol & Company | 
Various characters | 
33 episodes
 | 
| 1991 | 
Princesses | 
Len Kleckner | 
Episode: "Someday My Prince Will Gum"
 | 
| The Carol Burnett Show | 
Various characters | 
7 episodes
 | 
| 1992 | 
Stand By Your Man | 
Larson | 
Episode: "Spare Me"
 | 
| Great Scott! | 
Alberts | 
Episode: "Choir Mire"
 | 
1992–1999, 2019 | 
Mad About You | 
Dr. Mark Devanow | 
45 episodes
 | 
| 1993 | 
The Building | 
The Neurotic Director | 
Episode: "Father Knows Best"
 | 
| 1993–1995 | 
The Commish | 
Alex Beebee | 
6 episodes
 | 
| 1994 | 
The Nanny | 
Jeffrey Needleman | 
Episode: "The Playwright"
 | 
| Blue Skies | 
Kenny | 
8 episodes
 | 
| 1995 | 
A Whole New Ballgame | 
Dwight Kling | 
8 episodes
 | 
| Nowhere Man | 
Max Webb | 
Episode: "The Spider Webb"
 | 
| 1996 | 
Space: Above and Beyond | 
Colonel Matthew Burke | 
Episode: "Level of Necessity"
 | 
| Madness of Method | 
Owen Goodwin | 
Television short
 | 
| 1996–2002 | 
Spin City | 
Paul Lassiter | 
125 episodes
 | 
| 1998 | 
Something So Right | 
Paul | 
Episode: "Something About the 'Men' in Menstruation"
 | 
| The Lionhearts | 
Additional characters (voice) | 
Episode: "Singin' in the Mane"
 | 
| 1999 | 
Strangers with Candy | 
Harry Link, DDS | 
Episode: "Who Wants Cake?"
 | 
| The Wild Thornberrys | 
Lyrebird (voice) | 
Episode: "Koality and Kuantity"[3]
 | 
| America's Funniest Home Videos:Unwrapped for the Holidays" | 
Himself (host) | 
Television special
 | 
| 2001 | 
Even Stevens | 
Uncle Chuck Stevens | 
Episode: "Uncle Chuck"
 | 
| The Santa Claus Brothers | 
Roy Claus (voice) | 
Television film[3]
 | 
| 2001–2002 | 
Oswald | 
Pongo (voice)[3] | 
6 episodes
 | 
| 2001–2004 | 
Lloyd in Space | 
Vice Principal Feely (voice) | 
5 episodes
 | 
| 2002–2003 | 
Still Standing | 
Dr. Nathan Gerber | 
2 episodes
 | 
| 2002–2021 | 
Curb Your Enthusiasm | 
Cousin Andy | 
8 episodes
 | 
| 2003 | 
Just Shoot Me! | 
Jimmie Korsh | 
Episode: "The Last Temptation of Elliot"
 | 
| Miss Match | 
Phil Weston | 
Episode: "Kate in Ex-tasy"
 | 
| 2003–2004 | 
Scrubs | 
Harvey Corman | 
4 episodes
 | 
| 2003, 2007 | 
Kim Possible | 
Frugal Lucre (voice) | 
5 episodes
 | 
| 2004 | 
Girlfriends | 
Peter Miller | 
Episode: "Prophet & Loss"
 | 
| Oliver Beene | 
Barnaby Rollins | 
Episode: "X-ray Specs"
 | 
| The Division | 
Hicks | 
Episode: "Lost and Found"
 | 
| My Life, Inc. | 
Dan Mannion | 
Television film
 | 
| That '70s Show | 
Kimberly's Dad | 
Episode: "(I Can't Get No) Satisfaction"
 | 
| Less than Perfect | 
Lance Corcoran | 
Episode: "Shoo-In"
 | 
| Father of the Pride | 
Zebra (voice) | 
2 episodes
 | 
| 2004–2008 | 
Go Baby! | 
Narrator (voice) | 
 | 
| 2005 | 
Head Cases | 
Lou Albertini | 
Episode: "S(elf) Help"
 | 
| Genetically Challenged | 
Shermie Frankl | 
Television film
 | 
| E-Ring | 
Asst. Public Affairs Sec. Danton Murphy | 
2 episodes
 | 
| Reba | 
David | 
Episode: "Issues"
 | 
| 2005, 2013 | 
Sesame Street | 
Fairy Balloon Person, Mr. Disgracey | 
2 episodes
 | 
| 2005–present | 
American Dad! | 
Al Tuttle (voice) | 
 | 
| 2006 | 
Three Moons Over Milford | 
Pete Watson | 
Episode: "Dog Day Aftermoon"
 | 
| Stargate Atlantis | 
Lucius Lavin | 
2 episodes
 | 
| The Angriest Man in Suburbia | 
Josh | 
Television film
 | 
| 2007 | 
Law & Order: Criminal Intent | 
Ernest Foley | 
Episode: "Privilege"
 | 
| Psych | 
Hugo | 
Episode: "From the Earth to Starbucks"
 | 
| All of Us | 
Dennis | 
2 episodes
 | 
| Two and a Half Men | 
Artie | 
Episode: "Is There a Mrs. Waffles?"
 | 
| Sands of Oblivion | 
Ira | 
Television film
 | 
| 2009 | 
Chowder | 
Gumbo (voice) | 
Episode: "The Deadly Maze"
 | 
| Dora the Explorer | 
Greedy King (voice) | 
Episode: "Dora Saves the Crystal Kingdom"
 | 
| Sherri | 
Whiny Neighbor | 
Episode: "Indecision '09"
 | 
| 2009–2011 | 
The Penguins of Madagascar | 
Roger (voice) | 
6 episodes[3]
 | 
| 2010 | 
Leverage | 
Mayor Bradford Culpepper III | 
2 episodes
 | 
| Trauma | 
Ira | 
Episode: "Frequent Fliers"
 | 
| 'Til Death | 
Charlie | 
Episode: "Brother's Keeper"
 | 
| Burn Notice | 
Marv | 
3 episodes
 | 
| 2011 | 
Harry's Law | 
Marty Slumach | 
Episode: "Send in the Clowns"
 | 
| Mr. Sunshine | 
Rod McDaniel | 
2 episodes
 | 
| Femme Fatales | 
Jonathan Shields | 
Episode: "Behind Locked Doors, Part 1"
 | 
| Phineas and Ferb | 
Executive (voice) | 
Episode: "Perry the Actorpus"[3]
 | 
| 2011–2012 | 
Luck | 
Joey Rathburn | 
9 episodes
 | 
| 2012 | 
Sketchy | 
Lord Arby | 
Episode: "Downtown Arby's"
 | 
| NYC 22 | 
Geoff Arnhauldt | 
Episode: "Thugs and Lovers"
 | 
| 2012–2019 | 
Law & Order: Special Victims Unit | 
Various | 
4 episodes
 | 
| 2013 | 
Kroll Show | 
Mark | 
Episode: "Can I Finish?"
 | 
| Golden Boy | 
Paul Daly | 
3 episodes
 | 
| Childrens Hospital | 
Marvin | 
Episode: "Country Weekend"
 | 
| Drop Dead Diva | 
Marty Frumm | 
Episode: "One Shot"
 | 
| Dark Minions | 
Feldenbaum | 
Television film
 | 
| The Good Wife | 
Judge Alan Davies | 
Episode: "The Next Day"
 | 
| 2014 | 
The Michael J. Fox Show | 
Mr. Norwood | 
Episode: "Secret"
 | 
| Ten X Ten | 
Man 50s | 
Miniseries
 | 
| Bad Teacher | 
Brie's Husband | 
Episode: "Pilot"
 | 
| Glee | 
Mr. Rifkin | 
Episode: "The Back-Up Plan"
 | 
| Sharknado 2: The Second One | 
Harland 'The Blaster' McGuinness | 
Television film
 | 
| TripTank | 
Dad, Stanley (voice) | 
2 episodes[3]
 | 
| The Middle | 
Dr. Niller | 
Episode: "Unbraceable You"
 | 
| 2014–2015 | 
Randy Cunningham: 9th Grade Ninja | 
Mort Weinerman (voice) | 
4 episodes
 | 
| 2014–2017 | 
Red Oaks | 
Sam Myers | 
24 episodes
 | 
| 2014–2019 | 
Gotham | 
Mayor Aubrey James | 
13 episodes
 | 
| 2015 | 
What's Your Emergency | 
Devon Micketty | 
Episode: "Let's Make a Date"
 | 
| Unbreakable Kimmy Schmidt | 
Mr. Lefkovitz | 
Episode: "Kimmy Goes to School!"
 | 
| Love Is Dead | 
Ken Bell | 
Television film
 | 
| Happyish | 
Moses | 
Episode: "Starring Helen Keller, Moses and Lenny Bruce"
 | 
| Survivor's Remorse | 
Ira Irwin | 
Episode: "M.V.P."
 | 
| 2016 | 
Elementary | 
Trent Garby | 
Episode: "A Study in Charlotte"
 | 
| 2016–2017 | 
Lego Star Wars: The Freemaker Adventures | 
Imperial Officer General Durpin (voice) | 
7 episodes[3]
 | 
| 2017 | 
Jeff & Some Aliens | 
Stanley (voice) | 
5 episodes[3]
 | 
| Man Seeking Woman | 
God | 
Episode: "Blood"
 | 
| Still the King | 
Walt's Dad | 
Episode: "Flatbushes"
 | 
| Disjointed | 
Special Agent Schwartz | 
Episode: "The Worst"
 | 
| I'm Dying Up Here | 
Marty Dansak | 
5 episodes
 | 
| The Librarians | 
Bennie Konopka | 
Episode: "And the Steal of Fortune"
 | 
| 2017–2018 | 
Elena of Avalor | 
Cucahute (voice) | 
2 episodes[3]
 | 
| 2017–2019 | 
Welcome to the Wayne | 
Harvey Timbers (voice)[3] | 
5 episodes
 | 
| 2017–2020 | 
Rapunzel's Tangled Adventure | 
Uncle Monty (voice)[3] | 
10 episodes
 | 
| 2017–2022 | 
The Goldbergs | 
Formica Michael Mikowitz | 
8 episodes
 | 
| 2017–2025 | 
Big Mouth | 
Marty Glouberman (voice) | 
42 episodes
 | 
| 2018–2019 | 
Young Sheldon | 
Ira Rosenbloom | 
3 episodes
 | 
| 2018–2020 | 
Summer Camp Island | 
Shark (voice) | 
7 episodes[3]
 | 
| 2019 | 
Documentary Now! | 
Larry | 
Episode: "Original Cast Album: Co-Op"
 | 
| Brockmire | 
Gus Barton | 
6 episodes[7]
 | 
| Life in Pieces | 
Stuart | 
Episode: "Cabana Hero Action Son"
 | 
| Transparent | 
Howard | 
Episode: "Musicale Finale"
 | 
| A Million Little Things | 
Seymour | 
Episode: "Austin"
 | 
| John Mulaney & the Sack Lunch Bunch | 
Himself | 
Netflix special
 | 
| 2019–2020 | 
At Home with Amy Sedaris | 
Sugar Griz / Lenny | 
2 episodes
 | 
| 2019–2021 | 
Last Week Tonight with John Oliver | 
Richard Sackler / Blobfish | 
3 episodes[3]
 | 
| 2019–2022 | 
The Good Fight | 
Judge Alan Davies | 
2 episodes
 | 
| 2019–2023 | 
The Other Two | 
Skip Schamplin | 
5 episodes
 | 
| 2020 | 
Indebted | 
Artie | 
2 episodes
 | 
| Bob's Burgers | 
Jules (voice) | 
Episode: "Flat-Top O' the Morning to Ya"
 | 
| Penny Dreadful: City of Angels | 
Sam Bloom | 
Episode: "Dead People Lie Down"
 | 
| Almost Paradise | 
Uncle Danny | 
Episode: "Uncle Danny"
 | 
| Helpsters | 
Land Lovin' Lars | 
Episode: "Sea Lovin' Sam"
 | 
| The Simpsons | 
Film Director (voice) | 
Episode: "A Springfield Summer Christmas for Christmas"
 | 
| 2021 | 
Mickey Mouse Mixed-Up Adventures | 
Uncle Manny (voice) | 
Episode: "Donald's Dilemma"
 | 
| Devil May Care | 
Meteorologist Smith (voice) | 
Episode: "The Freeze"
 | 
| Everything's Gonna Be Okay | 
Toby | 
6 episodes
 | 
| Star Trek: Lower Decks | 
Doopler (voice) | 
Episode: "An Embarrassment of Dooplers"
 | 
| 2021–2024 | 
Mickey Mouse Funhouse | 
Cheezel (voice) | 
19 episodes
 | 
| 2022 | 
Blaze and the Monster Machines | 
Lord Carburetor (voice) | 
Episode: "Campfire Stories!"
 | 
| Beavis and Butt-Head | 
Rabbi (voice) | 
Episode: "Spiritual Journey"
 | 
| The Watcher | 
Mitch | 
4 episodes
 | 
| Little Demon | 
Himself (voice) | 
Episode: "Village of the Found"
 | 
| 2022–2023 | 
East New York | 
Captain Stan Yenko | 
21 episodes
 | 
| 2023 | 
History of the World, Part II | 
Saint Peter | 
3 episodes
 | 
| Family Guy | 
Rabbi Goldstein, Harold Goldfarb (voice) | 
2 episodes
 | 
| Ten Year Old Tom | 
Various characters (voice) | 
3 episodes
 | 
| Mr. Monk's Last Case: A Monk Movie | 
Funeral Director / Twins | 
Television film
 | 
| 2023–2024 | 
Hamster & Gretel | 
Tchotchke Jones (voice) | 
2 episodes
 | 
| 2024 | 
Clone High | 
Nostradamus (voice) | 
Episode: "The Cloniest Place on Earth: Missile While You Work"
 | 
| Girls5eva | 
Himself | 
Episode: "New York"
 | 
| John Mulaney Presents: Everybody's in LA | 
Himself (announcer) | 
6 episodes[8]
 | 
| Kite Man: Hell Yeah! | 
Health Inspector (voice) | 
Episode: "Prison Break, Hell Yeah!"
 | 
| Evil | 
Judge Jared Jeter | 
2 episodes
 | 
| Velma | 
Himself (voice) | 
Episode: "This Halloween Needs To Be More Special!"[9]
 | 
| 2024–present | 
Only Murders in the Building | 
Vince Fish | 
[10]
 | 
| 2024–2025 | 
Night Court | 
Sy Hoffman | 
2 episodes
 | 
| 2025 | 
Everybody's Live with John Mulaney | 
Himself (announcer) | 
12 episodes
 | 
| The Patrick Star Show | 
Benjamin B. Nana (voice) | 
Episode: "Sitcom Stars"
 | 
| Mid-Century Modern | 
Carol Mintz | 
2 episodes
 | 
| Poker Face | 
Jeffrey | 
Episode: "Whack-A-Mole"
 | 
| Ad World | 
Kyle's Dad | 
Episode: "About Us"
 | 
| Big City Greens
 | 
Ringmaster
 | 
Episode: "Unplanned"
 |