Sam Waterston

as Thomas Barnes(2 eps)

as Sam

as Franklin Delano Roosevelt

as Self

as Self (voice)

as Self

as Self(3 eps)

as George Shultz(5 eps)

as Self (voice)

as Headmaster Waldorf

as Self

as Erwin Griswold

as Charlie Mayo (voice)

as Self - Actor (archive footage)

as Marshall John Cook(7 eps)

as Narrator (voice)

as Narrator (voice)

as George Dupont

as Prof. Walter Zarrow

as Self - Guest(3 eps)

as Judge Alexander Baas / Doctor / Gravedigger

as Sol Bergstein(94 eps)

as Narrator

as Dad

as Charlie Skinner(25 eps)

as Reader (voice)(3 eps)

as Self

as John Honeyman (segment "A Walk in the Woods")

as Self (uncredited)(1 ep)

as Jack McCoy(2 eps)

as Self - Narrator

as J. Lee Rankin

as Chester Walker

as Dennis Shepard

as David Dickson

as Narrator (voice)

as Jack McCoy(4 eps)

as Self

as Self / Host / Narrator

as Narrator

as Bruce Kaplan (voice)(2 eps)

as Jack McCoy

as Dr. Karl Koster

as Thomas Jefferson (voice)(2 eps)

as Self(1 ep)

as Self - Guest(1 ep)

as Thomas Jefferson (voice)(2 eps)

as The President

as Harry Bancroft

as Richard Helms

as Mooney Wright

as Jordan Manmouth (archive footage)

as Narrator(10 eps)

as Tom Wingfield (archive footage)

as President William Foster

as Eugene Sutphin

as John Nils

as Daniel Chamberlain

as Forrest Bedford

as Jack McCoy(2 eps)

as Reader (voice)

as Jack Edwards

as Forrest Bedford(39 eps)

as Matthew Trant

as Abraham Lincoln (voice)(9 eps)

as Jack McCoy(405 eps)

as Self

as Royce

as Bill Shirer(4 eps)

as Ben

as Woody

as Andrew Stuart

as G.G. Devoe (segment "As Ye Sow")(1 ep)

as Jim Delmore

as Abraham Lincoln(2 eps)

as John Honeyman

as Peter

as Jones

as Additional Cast from 'The Killing Fields' (archive footage)

as Travis Coles

as Inspecteur Gerry Morrison

as Harry Crandall

as Capt. Allard Renslow

as David (uncredited)

as Jordan Manmouth(1 ep)

as Cal Morse

as Bernie

as Paul Broadbent

as Sydney Schanberg

as Ofoeti

as Self(1 ep)

as Doc Kearns

as Paul Wilcox

as David Bentells

as Professor Quentin Everett Deverill(6 eps)

as Robert Oppenheimer(7 eps)

as John Honeyman(1 ep)

as Frank Canton

as C.D.B. Bryan

as Robert Oppenheimer(7 eps)

as Jack Cutter

as William McClusky

as White Bull

as Mike

as Lt. Col. Peter Willis

as Le Clerq

as Self (uncredited)(2 eps)

as Mr. Graham

as Cecil Colson

as Self - Presenter(1 ep)

as Michael Elliott

as Nick Carraway

as Tom

as Benedick

as Felix

as James, the Limping Man

as Alex Monte

as Self(1 ep)

as Cameraman

as Taylor

as Desmond

as Oliver

as Andy

as Mark(2 eps)

as Travis Coles(1 ep)