Filmography
Peter MacNicol
Grey's Anatomy
2005 · Robert Stark
American Dad!
2005 · Old Man Hanson (voice), Santa's Elf (voice)
24
2001 · Tom Lennox
The Big Bang Theory
2007 · Robert Wolcott
Cheers
1982 · Mario
Marvel's Agents of S.H.I.E.L.D.
2013 · Professor Elliott Randolph
Boston Legal
2004 · Dr. Sydney Field
Young Justice
2010 · Professor Ivo / M.O.N.Q.I. (voice), Professor Ivo / Amazo / M.O.N.Q.I. (voice)
Numb3rs
2005 · Larry Fleinhardt, Writer
Chicago Hope
1994 · Alan Birch
Doc McStuffins
2012 · Egghead (voice)
Star Wars Rebels
2014 · Tseebo (voice)
The Batman
2004 · Langstrom (voice)
The Mindy Project
2012 · Rabbi Adler
Veep
2012 · Jeff Kane
Tales from the Crypt
1989 · Austin Haggard (segment "Let the Punishment Fit the Crime")
CatDog
1998 · Runt (voice)
The Wild Thornberrys
1998 · Raju / Monkey (voice)
All's Fair
2025 · Robert DeLancie
Ally McBeal
1997 · John Cage, Director
Ben 10: Ultimate Alien
2010 · Oliver / Forever Knight #1 (voice)
Rapunzel's Tangled Adventure
2017 · Nigel the Advisor (voice), Nigel (voice)
Justice League Unlimited
2004 · David Clinton (voice)
The Angry Beavers
1997 · Actor
Danny Phantom
2004 · Sidney Poindexter (voice)
All Rise
2019 · Albert Campbell
Buzz Lightyear of Star Command
2000 · Major (voice)
TFI Friday
1996 · Actor
A Series of Unfortunate Events
2017 · Ishmael
The Spectacular Spider-Man
2008 · Otto Octavius (voice), Otto Octavius / Doctor Octopus (voice)
Harvey Birdman, Attorney at Law
2000 · Actor, X the Eliminator (voice)
Faerie Tale Theatre
1982 · Martin
The Days and Nights of Molly Dodd
1987 · Steve Cooper
CSI: Cyber
2015 · Simon Sifter
Fairly Legal
2011 · Judge Smollet
Battleship
2012 · Secretary of Defense
Shell
2025 · Dr. Thaddeus Brand
G.I. Joe: Renegades
2010 · Firefly (voice)
Addams Family Values
1993 · Gary Granger
Ghostbusters II
1989 · Janosz Poha
Bean
1997 · David Langley
The Lyon's Den
2003 · Actor
The Day the Earth Blew Up: A Looney Tunes Movie
2024 · The Invader (voice)
The Powers That Be
1992 · Bradley Grist
Dracula: Dead and Loving It
1995 · Thomas Renfield
Recess: School's Out
2001 · Fenwick (voice)
Scooby-Doo! Stage Fright
2013 · Dewey Ottman (voices)
Sophie's Choice
1982 · Stingo
Dragonslayer
1981 · Galen
Stuart Little 3: Call of the Wild
2005 · Troopmaster (voice)
Balto: Wolf Quest
2002 · Muru (voice)
Baby Geniuses
1999 · Dan
Breakin' All the Rules
2004 · Philip Gascon
Housesitter
1992 · Marty
The Secret of NIMH 2: Timmy to the Rescue
1999 · Narrator (voice)
Game Change
2012 · Rick Davis
By Dawn's Early Light
1990 · Sedgwick
Radioland Murders
1994 · Son Writer
Olive, the Other Reindeer
1999 · Fido (voice)
Roswell
1994 · Lewis Rickett
The Spectacular Spider-Man: Attack of the Lizard
2008 · Otto Octavius/Doctor Octopus (voice)
Heat
1986 · Cyrus Kinnick
Mojave Moon
1996 · Tire Repairman
Our (Almost Completely True) Love Story
2023 · Psycho Date
The Pooch and the Pauper
2000 · Liberty (voice)
Silencing Mary
1998 · Lawrence Dixon
Floss
TBA · Dr. Rivus
Hard Promises
1992 · Stuart
Voices & Visions: Walt Whitman
1988 · Narrator
The Boy Who Left Home to Find Out About the Shivers
1984 · Martin
American Blue Note
1989 · Jack Solow
Abducted: A Father's Love
1996 · Roy Dowd
Home Delivery
2026 · Howard Evans
Johnny Bull
1986 · Joe Kovacs
Snowden's Christmas
1999 · Snowden (voice)