Robert Picardo

The Mentalist

Jason Cooper

Grey's Anatomy

Mr. Nelligan

Supernatural

Wayne Whittaker Jr.

NCIS

Dale Harding

Bones

Dr. Lawrence Rozran

The Flash

Dexter Myles

The Flash

Dexter Myles (voice)

Castle

Clark Murray

Hawaii Five-0

C.I.A. Man

Smallville

Edward Teague

The West Wing

E. Bradford Shelton

Stargate SG-1

Richard Woolsey

Lucifer

Yuri

Frasier

Charlie Koechner

Young Sheldon

Professor Salzman

Star Trek: Voyager

The Doctor

Star Trek: Voyager

Director

Star Trek: Voyager

Writer

The Closer

Mr. Sheffield

CSI: NY

Sheriff Benson

Star Trek: Deep Space Nine

Dr. Lewis Zimmerman / EMH Mark I

The Outer Limits

Emmet Harley

ER

Abraham Zimble

The Practice

Dr. Edmunds

Crossing Jordan

Bruno Casnelli

Cold Case

Arthur Lennox

The Orville

Ildis Kitan

L.A. Law

John Dunphy

Sabrina, the Teenage Witch

Bob Jacobs

The O.C.

Bill Merriam

Home Improvement

Joe Morton

Stargate Atlantis

Richard Woolsey

Taxi

Philip Polevoy

Station 19

Mr. Nelligan

St. Elsewhere

Eli Muzzy

Batman: The Animated Series

Eddie G. (voice)

Chuck

Perseus

The Wonder Years

Coach Cutlip

The Good Fight

Arbiter Alan Mannheim

21 Jump Street

Ralph Buckley

Justified

Karl Hanselman

Cow and Chicken

President / Puppet President (voice)

The Golden Girls

Dr. Revell

Alice

The 4400

Trent Appelbaum

The Dead Zone

Mitch McMurtry

Early Edition

Doctor

Newhart

Dinosaurs

Clerk (voice)

Dinosaurs

Ted (voice)

Dinosaurs

Muse (voice)

Jessie

Cyril Lipton

Perception

A. Z. Weyland

Tales from the Crypt

Frank Bobo

Happy Endings

Mr. Logan

Ben 10

Leader Alien (voice)

Buzz Lightyear of Star Command

Professor Reddschift (voice)

Scarecrow and Mrs. King

Body of Proof

Henry Pedroni

Stars in the House

Self

Justice League Unlimited

Amazo (voice)

Mythic Quest

Principal Taggart

Ally McBeal

Barry Philbrick

Kojak

Thomas Rindone

CSI: Vegas

Carlo Rey

Amazing Stories

Tony Sepulveda

Stargate Universe

Richard Woolsey

Harry's Law

Annie's Psychiatrist

Justice League Action

Harvey Dent / Two-Face (voice)

China Beach

Dick Richard

Dickinson

Ithamar Conkey

Quantum Leap

Dr. Edwin Woolsey

Masters of Horror

Star Trek: Prodigy

The Doctor (voice)

Austin & Ally

Dr. Grant

Pushing Daisies

Detective Puget

What a Cartoon!

Pfish (voice)

Justice League

Amazo (voice)

Justice League

Blackhawk / Nazi Soldier (voice)

Justice League

Blackhawk (voice)

NTSF:SD:SUV::

Damian

The Adventures of Brisco County, Jr.

Puel

Eve

Professor Dunson

Star Trek: Starfleet Academy

The Doctor

Femme Fatales

Hieronymus Hawks

Silver Spoons

Louis Morgan

The Client List

Judge Hughes

Total Recall

Johnnycab (voice)

Seven Days

Archie Bunker's Place

Rebel Highway

Mr. Cahn

Evil Con Carne

Cod Commando (voice)

E-Ring

The Shuttlepod Show

Self

Women's Murder Club

The Lyon's Den

Gremlins 2: The New Batch

Forster

The 'Burbs

Joe, Garbageman #2

Hail, Caesar!

Rabbi

Small Soldiers

Ralph, Clean Room Technician

Dumb and Dumber

Colonel Drab / Control Tower Voice (voice)

Dumb and Dumber

Cook (voice)

Dumb and Dumber

Chief (voice)

Star Trek: First Contact

Enterprise EMH

Legend

Meg Mucklebones

Looney Tunes: Back in Action

Acme VP, Rhetorical Questions

The Savage Dragon

(voice)

Throb

Confess, Fletch

Count Clementi Arbogastes De Grassi

The Pagemaster

Pirate (voice)

VR.5

Mr. President

Reinbeck

The Howling

Eddie Quist

It Takes Two

Ben 10: Race Against Time

Principal White

Back to School

Giorgio

Innerspace

The Cowboy

Amazon Women on the Moon

Rick Raddnitz (segment "Roast Your Loved One")

The Meddler

Cos

The Captains Close Up

Self

Star Trek Day

Self

Beethoven's Christmas Adventure

Smirch

Dead Heat

Lt. Herzog

Explorers

Starkiller / Wak / Wak and Neek's Father

The Dream Merchants

Mark Kessler

Atlas Shrugged: Part II

Dr. Robert Stadler

Revenge of the Nerds IV: Nerds in Love

Chad Penrod

Bates Motel

Dr. Goodman

Roses Are for the Rich

Durant

976-EVIL

Mark Dark

L.A. Story

Voicephone (voice) (uncredited)

Loverboy

Dr. Reed Palmer

Star Trek: Legenden

Self - Der Doktor

Wagons East!

Ben Wheeler

Mega Shark vs. Crocosaurus

Admiral Calvin

The Captains

Self

A Biltmore Christmas

Harold Balaban

Buttons

Mr. Wentworth

Star 80

Interviewer

The Second Civil War

Godfrey

Age of Tomorrow

General Magowan

Out There

Walter Danverstein (uncredited)

Matinee

Howard

Surge of Power: Where There's Smoke

Omen

Werewolf Game

Bill

The Sixty Year Mission: How Star Trek Changed Television and the World

Self

Alterverse (Occupants)

Dr Alan Peterson

The Stooge

Milton the Eternalist

Star Trek: Voyager - Basics

The Doctor

Munchies

Bob Marvalle

Jack's Back

Dr. Carlos Battera

Quantum Quest: A Cassini Space Odyssey

Milton (voice)

That Guy Dick Miller

Self

Don't Blink

Man in Black

Star Trek: Voyager - Dark Frontier

The Doctor

Paul Reiser: Out on a Whim

Runaway Daughters

Mr. Cahn

The Cover Girl and the Cop

Denise's Date

White Mile

Tom Horton

Violation of Trust

Raymond Gilmore

Fatal Deception: Mrs. Lee Harvey Oswald

David Lifton

Star Trek: Voyager - Scorpion

The Doctor

Space Command Redemption

Yusef Sekander

Creating a Myth... the Memories of 'Legend'

Himself

Get Crazy

O'Connell

Unbelievable!!!!!

Boris / Edgar Allan Putz

A.I. Assault

Dr. John Foster

For the Love of Star Trek

Self

A Murderous Affair: The Carolyn Warmus Story

David Lewis

To the Journey: Looking Back at Star Trek: Voyager

Self

Star Trek: 30 Years and Beyond

Self

The Violation of Sarah McDavid

Scott Crowell

The New Explorers: The Science of Star Trek

Self

Discontinued

Theodore

Cozmo's

Wender

Torn

Rabbi

40 Years of Star Trek

Self

China Beach: Pilot

Dr. Dick Richard

Archibald the Rainbow Painter

Dr. Kurtz

Deadly Matrimony

Prosecutor

Deck the Heart

Larry Link

E! Inside Star Trek: Voyager

Himself

The Man Who Fell to Earth

Agent Richard Morse

Star Trek: Voyager - Inside the New Adventure

Host

Chasing the Green

Camilla Dickinson

Mr. Stephanowski

Star Trek: Voyager - Future's End

The Doctor

The Captains of The Final Frontier

Self

Golden Gate

After Masks

Dr. Robinson (Past Cure Segment)

Portal Runner

TV Salesman

MEAD

Admiral Gillette

The Witches of Eastwick

Raymond Gentry

The Legends of Nethiah

Grandpa / Sir Hanif

Lois Gibbs and the Love Canal

Larry McGuinness

Launch of Star Trek: Voyager

Himself

Bad News on the Doorstep

The Father and the Bear

Charlie

Menno's Mind

Senator Taylor

The Other Woman

Chuchi

Superhuman: The Invisible Made Visible

Self - Special Guest

Morlocks

Colonel Wichita

Unleashing the Beast: Making ‘The Howling’

Monsterwolf

Stark

Rock Jocks

Guard 1

Universal Signs

Father Joe

Star Trek: Renegades

Dr. Zimmerman

The Awakened

Maddox

The Odds

Dale Kakowski

The Candidate

Carl Tucker

Motorama

Jerry the Policeman

Dixie: Changing Habits

Harry Meadows

Frame Up

Frank Govers

Mansion of Blood

Samuel Corbett

Ben, frankly.

Caesar

Trail of Blood

Agent Weston

A Bad Feeling

Self

How Far Does the Dark Go?

The Amati Girls

Grace's Doctor

Homecoming

Kurt Rand

Samantha

Neil Otto

Sensored

Wade Mixon

The Inspector Chronicles

Bernard

P.J.

Stan Jamison

Infiltrators

Reverend Quaid

Spirit Hunters

Bob