highest rated
acting
- Vivien & The Florist → John Gielgud
- Mouse → Mr. Murdaugh
- This Ordinary Thing → Self (voice)
- The Exorcism → Father Conor
- Julia (TV) → Paul Child
- Stars in the House (TV) → Self
- The Lavender Scare → Dr. Franklin E. Kameny (voice)
- Wet Hot American Summer: Ten Years Later (TV) → Henry Neumann
- Julie's Greenroom (TV)
- When We Rise (TV) → Dr. Jones
- Must See TV: An All Star Tribute to James Burrows → Self
- Wet Hot American Summer: First Day of Camp (TV) → Henry Neumann
- Hurricane of Fun: The Making of Wet Hot → Self
- Late Night with Seth Meyers (TV) → Self
- Vanya and Sonia and Masha and Spike → Vanya
- The Perfect Host → Warwick Wilson
- Sondheim! The Birthday Concert → Self - Host
- The Good Wife (TV) → Frank Prady
- Stingray Sam → Narrator
- Forever Plaid → The Narrator
- Monty Python Conquers America → Self
- The Graham Norton Show (TV) → Self
- The Megan Mullally Show (TV) → Self - Guest
- The Amazing Screw-On Head → Emperor Zombie (voice)
- World's Greatest Stand Up: Volume One → self
- Celebrity Mix → Self (archive footage)
- The Tony Danza Show (TV) → Self
- The Celebrity Apprentice (TV) → Self
- Hellboy → Abe Sapien (voice) (uncredited)
- Frasier: Analyzing the Laughter → Niles Crane
- Down with Love → Peter MacMannus
- Gary the Rat (TV)
- The Shakespeare Sessions
- Behind the Couch: The Making of 'Frasier' → Self
- Treasure Planet → Doctor Doppler (voice)
- Full Frontal → Carl
- Laud Weiner → Laud Weiner
- Osmosis Jones → Drix (voice)
- Wet Hot American Summer → Henry
- Chain of Fools → Mr. Kerner
- On the Edge → Barney (segment "Happy Birthday")
- Titus (TV) → Jerry October
- The Tangerine Bear: Home in Time for Christmas! → Bird (voice)
- Isn't She Great → Michael Hastings
- The Late Late Show with Craig Kilborn (TV) → Self - Guest
- Jackie's Back! → Perry (The Deaf Rehearsal Pianist)
- The Mating Habits of the Earthbound Human → The Narrator
- The Frasier Story → Self
- Hercules (TV) → Daedalus
- Hercules (TV) → Daedalus (voice)
- A Bug's Life → Slim (voice)
- The View (TV) → Self
- Mighty Ducks: The Animated Series (TV) → Baron Von Lichtenstamp (voice)
- Star Trek: 30 Years and Beyond → Niles Crane
- The Outer Limits (TV) → Dr. Jack Henson
- Caroline in the City (TV) → Dr. Niles Crane
- Caroline in the City (TV) → Jimmy Callahan
- Happily Ever After: Fairy Tales for Every Child (TV) → Puss (voice)
- Nixon → John Dean
- The Adventures of Hyperman (TV)
- The World of James Bond → Self
- Wolf → Roy McCallister
- Frasier (TV) → Niles Crane
- Late Show with David Letterman (TV) → Self - Guest
- Late Night with Conan O'Brien (TV) → Self - Guest
- GMTV (TV) → Self
- Addams Family Values → Delivery Room Doctor
- Sleepless in Seattle → Dennis Reed
- The Tonight Show with Jay Leno (TV) → Self
- The Powers That Be (TV) → Theodore Van Horne
- Storytime (TV)
- The Fisher King → Lou Rosen
- Little Man Tate → Garth Emmerick
- Dream On (TV) → Jerry Dorfer
- The Simpsons (TV) → Cecil Terwilliger (voice)
- The Simpsons (TV) → Felix (voice)
- Vampire's Kiss → Theater Guy
- LIVE with Kelly and Mark (TV) → Self - Guest
- Bright Lights, Big City → Bartender at Fashion Show
- Knightwatch (TV) → Gibson
- Crossing Delancey → Mark
- Rocket Gibraltar → Monsieur Henri
- The Appointments of Dennis Jennings → Businessman
- Spenser: For Hire (TV) → O'Neill
- Moving Violations → Immigration Officer
- Saturday Night Live (TV) → Self - Host
- Tony Awards (TV) → Self - Presenter
- Today (TV) → Self
- The Emmy Awards (TV) → Self
- Golden Globe Awards (TV) → Self - Nominee