(1988) Tricks of the Trade

as Criminal

(1998) The Lost World

as Professor George Edward Challenger

(2009) Bionicle: The Legend Reborn

as Raanu (voice)

(2023) The Assassin's Apprentice: Silbadores of the Canary Islands

as Roy

(2018) Wedding Swingers

as Dr. Hans Meeker

(2004) What the #$*! Do We (K)now!?

as Older Man (in subway)

(2006) What the Bleep! Down the Rabbit Hole

as Old Man

(1986) The Hitcher

as Interrogation Sergeant

(2009) Fanboys

as Anteaus (archive footage) (uncredited)

(1997) Snide and Prejudice

as Eckart

(1987) Like Father Like Son

as Trigger's Dad

(2006) Dead and Deader

as Coroner Flutie

(1995) Dream Man

as Staatsanwalt Van Horn

(1980) Stardust Memories

as Eulogy Audience

(1989) Arena

as Weezil

(1990) Death Warrant

as Dr. Gottesman

(2008) Insanitarium

as Hawthorne

(2007) Billy & Mandy's Big Boogey Adventure

as General Skarr / Pirate #7 (voice)

(2001) Breathing Hard

as Conrad

(2005) Billy and Mandy Save Christmas

as General Skarr (voice)

(1993) Star Trek: Deep Space Nine - Emissary

as Quark

(1995) Star Trek: Deep Space Nine - The Way of the Warrior

as Quark

(1994) Journey's End - The Saga of Star Trek: The Next Generation

as Self

(2011) Atlas Shrugged: Part I

as Dr. Potter

(1988) Dangerous Curves

as Boggs

(2001) Evil Con Carne

as General Skarr/Stomach (voice)

(1988) The Verne Miller Story

as Mortician

(1999) The Auteur Theory

as Detective Blank

(2011) For Christ's Sake

as The Pope

Holograms All the Way Down

as Quark

(1990) Miracle Landing

as Rick, Maui Tower Operator

(2016) Ratchet & Clank

as Dr. Nefarious (voice)

(2007) Billy & Mandy: Wrath of the Spider Queen

as General Skarr (voice)

(2004) Single Santa Seeks Mrs. Claus

as Ernest

(1987) Blind Date

as French Waiter

(2014) The Sublime and Beautiful

as ---

(1993) Star Trek: Deep Space Nine - Behind the Scenes

as Himself

(2020) Unbelievable!!!!!

as Male Moesha

(1989) She Knows Too Much

as Plahte

(1996) The Making of Star Trek Deep Space Nine Trials And Tribble-ations

as Self

(2019) The Circuit

as ---

(2016) 50 Years of Star Trek

as Self

(1996) Eye for an Eye

as Judge Arthur Younger

(2005) Meet The Santas

as Ernest

(2012) Dropping Evil

as CEO / 'Boss Man'

(2001) Just Ask My Children

as Prison Psychiatrist

(1993) Slaughter of the Innocents

as Dr. Mort Seger

(1989) Big Man on Campus

as Dr. Oberlander

(2008) Underfist: Halloween Bash

as General Skarr / Candy Skeleton / Rat / Creepy Gnome (voice)

(2018) 5th Passenger

as Myers

(2018) Golden Boy

as Cagan

(2018) What We Left Behind: Looking Back at Star Trek: Deep Space Nine

as Self

(2007) Star Trek: Beyond the Final Frontier

as Self

(1986) Stoogemania

as Larry II

(2017) Followed Back

as Dr. Lane

(2013) DC Nation - Tales of Metropolis - "Bizarro"

as Brainiac (voice)

(1979) Women at West Point

as Maj. Logan

(2021) Ratchet and Clank: Life of Pie

as Dr. Nefarious (voice)

(2019) That Guy... Who Was In That Thing 3: Trek Stars

as Self

(2016) Diani and Devine Meet the Apocalypse

as Thomas

(2005) The Works

as Gerald

(1976) Alice

as ---

(2000) Boston Public

as Honorable Judge David Semel

(1986) Sledge Hammer!

as ---

(1989) Seinfeld

as Stan the Caddy

(2005) Numb3rs

as ---

(1993) Star Trek: Deep Space Nine

as Quark

(1982) Remington Steele

as Nestor Bartholomew

(1987) Star Trek: The Next Generation

as Quark

(1997) Ally McBeal

as Judge Walworth

(1986) L.A. Law

as Timothy Wiseboro

(2003) Joan of Arcadia

as ---

(2001) The Guardian

as ---

(1979) The Facts of Life

as ---

(1999) Judging Amy

as Anthony Cara

(1995) Star Trek: Voyager

as Quark

(1987) Beauty and the Beast

as ---

(2001) Crossing Jordan

as Dr. McCain

(1998) Charmed

as The Wizard

(1999) Rocket Power

as ---

(2005) Committed

as Super

(2003) Nip/Tuck

as ---

(1997) Space Cadets

as Self

(2001) Grim & Evil

as ---

(1981) Hill Street Blues

as ---

(2005) Invasion

as ---

(1997) The Practice

as ---

(1982) Cagney & Lacey

as ---

(2003) Evil Con Carne

as General Skarr/Stomach (voice)

(1989) Alien Nation

as ---

(2003) Tremors

as Cecil Carr

(1997) Stargate SG-1

as Anteaus

(2000) The Invisible Man

as Tommy Walker / Augustin Gaither

(1998) Martial Law

as Daniel Darius

(1994) ER

as Levine

(2004) Boston Legal

as Judge Brian Hooper

(2008) Leverage

as Dr. Patemkin

(2015) We Bare Bears

as Additional Voices (voice)

(2003) The Handler

as Maxwell Rosenheim

(2001) Citizen Baines

as ---

(1990) Cop Rock

as ---

(2001) The Tick

as The Terror

(1991) Brooklyn Bridge

as ---

(1987) Star Trek: The Next Generation

as Self

(2001) The Grim Adventures of Billy and Mandy

as General Skarr

(2001) Thieves

as ---

(2005) Ben 10

as Slix (voice)

(1990) Good Grief

as ---

(1997) Buffy the Vampire Slayer

as Principal Snyder

(2022) The Shuttlepod Show

as Self

(2004) Justice League Unlimited

as Dr. Milo (voice)

(2009) Castle

as Benjamin Donnelly

(2000) CSI: Crime Scene Investigation

as Oscar

(2012) Perception

as Dr. Cutler

(2005) South of Nowhere

as Dr. Crawford

(2018) The Rookie

as Judge Paloma

(1999) The West Wing

as Richard III

(2009) Warehouse 13

as Charlie Martin

(1987) Married... with Children

as Mr. Lovejoy

(1987) Star Trek: The Next Generation

as Letek

(2021) The Center Seat: 55 Years of Star Trek

as Self

(2020) Star Trek Day

as Self

(1987) Duet

as Dr. Jordan / Jury Foreman

(2020) Close Enough

as Phil (voice)

(1987) Star Trek: The Next Generation

as DaiMon Bractor

(1990) Grand

as Dr. Kasmurski

(2016) Timeless

as David Rittenhouse

(1986) L.A. Law

as Ernie Frye

(2011) Franklin & Bash

as Stu Weston

(2010) Regular Show

as Mr. Murphy (voice)

(2010) Regular Show

as Zingo #3 / Guy #1 (voice)

(2010) Regular Show

as Waiter / Gopher Person / Guy (voice)

(2010) Regular Show

as Nightmare Alien (voice)

(2010) Regular Show

as Buttonwillow (voice)

(2010) Regular Show

as Dr. Henry (voice)

(2020) Star Trek: Lower Decks

as Quark (voice)

(2005) Invasion

as Josh Breims

(1987) Star Trek: The Next Generation

as Gift-Box Face

(2013) Uncle Grandpa

as Additional Voices (voice)

(2023) Star Trek: Very Short Treks

as Quark

(2016) Justice League Action

as Zilius Zox (voice)

(2008) Batman: The Brave and the Bold

as Calculator (voice)

(2008) Batman: The Brave and the Bold

as Psycho Pirate (voice)

(2008) Batman: The Brave and the Bold

as Professor (voice)

(2012) DC Nation Shorts

as Superman (voice)

(2012) DC Nation Shorts

as Jokerfish (voice)

(2024) The D-Con Chamber

as Self

(1983) Trauma Center

as Bernard Hopper

(1986) It's Garry Shandling's Show

as Doctor