Acting

2023

(5 episodes) as Quark

2022

(1 episode) as Self

2021

(1 episode) as Self

2020		Star Trek Day (1 episode) as Self
2020		Star Trek: Lower Decks (1 episode) as Quark (voice)
2020		Close Enough (1 episode) as Phil (voice)

2018

(1 episode) as Judge Paloma

2016		Justice League Action (1 episode) as Zilius Zox (voice)
2016		Timeless (1 episode) as David Rittenhouse

2015

(1 episode) as Additional Voices (voice)

2012

(1 episode) as Dr. Cutler

2011

(1 episode) as Stu Weston

2010

(1 episode) as Nightmare Alien (voice) (1 episode) as Waiter / Gopher Person / Guy (voice) (1 episode) as Zingo #3 / Guy #1 (voice) (1 episode) as Mr. Murphy (voice) (3 episodes) as Dr. Henry (voice) (1 episode) as Buttonwillow (voice)

2009		Warehouse 13 (1 episode) as Charlie Martin
2009		Castle (1 episode) as Benjamin Donnelly

2008		Leverage (1 episode) as Dr. Patemkin
2008		Batman: The Brave and the Bold (1 episode) as Professor (voice) (1 episode) as Psycho Pirate (voice) (1 episode) as Calculator (voice)

2005		Ben 10 (1 episode) as Slix (voice)
2005		South of Nowhere (1 episode) as Dr. Crawford
2005		Invasion (1 episode)
2005		Numb3rs (1 episode)
2005		Committed (1 episode)

2004		Boston Legal (7 episodes) as Judge Brian Hooper
2004		Justice League Unlimited (1 episode) as Dr. Milo (voice)

2003		The Handler (2 episodes) as Maxwell Rosenheim
2003		Joan of Arcadia (1 episode)
2003		Nip/Tuck (1 episode)
2003		Evil Con Carne (35 episodes) as General Skarr/Stomach (voice)
2003		Tremors (1 episode) as Cecil Carr

2001		The Tick (1 episode) as The Terror
2001		Citizen Baines (1 episode)
2001		Thieves (1 episode)
2001		The Guardian (1 episode)
2001		Crossing Jordan (1 episode) as Dr. McCain
2001		The Grim Adventures of Billy and Mandy (5 episodes) as General Skarr
2001		Grim & Evil (62 episodes)

2000		Boston Public (1 episode) as Honorable Judge David Semel
2000		CSI: Crime Scene Investigation (1 episode) as Oscar
2000		The Invisible Man (3 episodes) as Tommy Walker / Augustin Gaither

1999		The West Wing (1 episode) as Richard III
1999		Judging Amy (1 episode) as Anthony Cara
1999		Rocket Power (1 episode)

1998		Charmed (1 episode) as The Wizard
1998		Martial Law (1 episode) as Daniel Darius

1997		Ally McBeal (1 episode)
1997		Stargate SG-1 (2 episodes) as Anteaus
1997		Space Cadets (1 episode) as Self
1997		Buffy the Vampire Slayer (19 episodes) as Principal Snyder
1997		The Practice (2 episodes)

1995

(1 episode) as Quark

1994

(1 episode) as Levine

1993

(176 episodes) as Quark

1991

(4 episodes)

1990		Good Grief (1 episode)
1990		Cop Rock (1 episode)
1990		Grand (2 episodes) as Dr. Kasmurski

1989		Alien Nation (1 episode)
1989		Seinfeld (1 episode) as Stan the Caddy

1987		Star Trek: The Next Generation (1 episode) as Letek (1 episode) as Self (1 episode) as Gift-Box Face (1 episode) as DaiMon Bractor (1 episode) as Quark
1987		Beauty and the Beast (3 episodes)
1987		Duet (1 episode) as Dr. Jordan / Jury Foreman
1987		Married... with Children (1 episode) as Mr. Lovejoy

1986		Sledge Hammer! (1 episode)
1986		L.A. Law (1 episode) as Ernie Frye (1 episode) as Timothy Wiseboro

1982		Remington Steele (1 episode) as Nestor Bartholomew
1982		Cagney & Lacey (1 episode)

1981

(1 episode)

1979

(1 episode)

1976

(1 episode)

Writing

2003

(1 episode) … Writer