John Colicos

Battlestar Galactica: The Second Coming

Baltar

My Father's Shadow: The Sam Sheppard Story

Richard Eberle

The Windsor Protocol

Gerhardt Heinzer / Albert Greenfield

The Last Don

Eli Marrion · (1 episode)

No Contest

Senator Donald Wilson

Star Trek: Deep Space Nine

Kor · (3 episodes)

X-Men

Apocalypse (voice) · (9 episodes)

In Defense of a Married Man

Charles Evers

Love and Hate: The Story of Colin and Joanne Thatcher

Serge Kujawa

Shadow Dancing

Anthony Podopolis

War of the Worlds

Quinn · (2 episodes)

Nowhere to Hide

General Howard

The New Alfred Hitchcock Presents

Carter Talbot · (1 episode)

The New Alfred Hitchcock Presents

Lestrade / Moriarty · (1 episode)

The Hitchhiker

Mr. Stregga · (1 episode)

Scarecrow and Mrs. King

(1 episode)

American Caesar

Self - Narrator

The Postman Always Rings Twice

Nick Papadakis

Conquest of the Earth

Baltar

Phobia

Inspector Barnes

The Changeling

Captain DeWitt

The Starlost: The Beginning

The Governor

The Paradise Connection

Maj. Derek Barclay-Battles

Mission Galactica: The Cylon Attack

Baltar

King Solomon's Treasure

Allan Quatermain

Vega$

(1 episode)

Battlestar Galactica

Count Baltar · (21 episodes)

Battlestar Galactica

Baltar

The Bastard

Lord North

The Hardy Boys / Nancy Drew Mysteries

(1 episode)

Quincy, M.E.

(1 episode)

Charlie's Angels

Anton Karazna · (1 episode)

Drum

Bernard DeMarigny

Breaking Point

Vincent Karbone

The Whiz Kid and the Carnival Caper

Moroni

Wonder Woman

Ambassador Orrick · (1 episode)

Switch

Gilchrist · (1 episode)

A Matter of Wife... and Death

Joe Ruby

Bronk

(1 episode)

The Hecklers

Narrator

Harry O

Walter Nesbitt · (1 episode)

Petrocelli

(1 episode)

The National Dream

Cornelius Van Horne · (7 episodes)

The Six Million Dollar Man

General Norbukov · (1 episode)

The Magician

Paul Gunther · (2 episodes)

The Starlost

The Governor · (1 episode)

Portrait: A Man Whose Name Was John

Numan Menemengioglu

Scorpio

McLeod

Tennessee Williams' South

The Wrath of God

Col. Santilla

Goodbye, Raggedy Ann

Paul Jamison

Red Sky at Morning

Jimbob Buel

Raid on Rommel

Sgt. Maj. Allan MacKenzie

Doctors' Wives

Mort Dellman

Night Gallery

Survivor (segment "Lone Survivor") · (1 episode)

The Young Rebels

(1 episode)

Anne of the Thousand Days

Cromwell

Medical Center

(1 episode)

Medical Center

Harry Weldman · (1 episode)

Then Came Bronson

(1 episode)

Hawaii Five-O

Lorenzo Corman · (1 episode)

The Name of the Game

Rafael · (1 episode)

Hawaii Five-O

Mr. Thorncrest · (1 episode)

It Takes a Thief

The Man · (1 episode)

Mannix

Eddie Lee Prentiss · (1 episode)

Mannix

Dr. Myles Considine · (2 episodes)

Mannix

Lytell · (1 episode)

Mannix

David Barker · (1 episode)

Mannix

Alton K. Moore · (1 episode)

Mannix

Duke Benedict · (1 episode)

The High Chaparral

Matthew Kendall · (1 episode)

Mission: Impossible

Chief of Internal Security Manuel Ferrar · (1 episode)

Mission: Impossible

Commissioner Taal Jankowski · (1 episode)

Mission: Impossible

Milos Kuro · (1 episode)

Star Trek

Kor · (1 episode)

The F.B.I.

Logan · (1 episode)

Les ludions

Profiles in Courage

Patrick Henry · (2 episodes)

The Defenders

District Attorney · (1 episode)

Wuthering Heights

Hindley

War Drums

Chino

Breakaway

First Kidnapper

Bond of Fear

Dewar

Passport to Treason

Pietro

Gunsmoke

Judge Flood · (1 episode)

Barbados Quest

Mustachioed Henchman (as John Collicos)

The Wonderful World of Disney

Moroni · (2 episodes)

Omnibus

Gen. George McClellan · (1 episode)

Hallmark Hall of Fame

Lucentio · (1 episode)

Hallmark Hall of Fame

Tom Pettigrew · (1 episode)

Hallmark Hall of Fame

Comte de Guiche · (1 episode)

Studio One

Gold Root · (1 episode)