Sam Waterston

as Franklin Delano Roosevelt

as Self (voice)

as Erwin Griswold

as Charlie Mayo (voice)

as Self - (archive footage)

as George Dupont

as Prof. Walter Zarrow

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

as Chester Walker

as Dennis Shepard

as Self

as Jack McCoy

as Dr. Karl Koster

as The President

as Mooney Wright

as President William Foster

as Eugene Sutphin

as Daniel Chamberlain

as Jack Edwards

as Matthew Trant

as Ben

as Peter

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

as Harry Crandall

as David (uncredited)

as Cal Morse

as Paul Broadbent

as Sydney Schanberg

as Frank Canton

as Jack Cutter

as White Bull

as Mike

as Lt. Col. Peter Willis

as Le Clerq

as Mr. Graham

as Cecil Colson

as Nick Carraway

as Tom Wingfield

as James, the Limping Man

as Taylor