Suggestions by @mcorkrean
8,394 suggestions

Adam Scott
as Seth Neddermeyer in Oppenheimer (2003)
Jeremy Piven
as Edward Condon in Oppenheimer (2003)

Bud Cort
as George Kistiakowsky in Oppenheimer (2003)

Stephen Graham
as Philip Morrison in Oppenheimer (2003)

Diane Venora
as Ruth Tolman in Oppenheimer (2003)

Rory Cochrane
as Donald Hornig in Oppenheimer (2003)

William Fichtner
as Klaus Fuchs in Oppenheimer (2003)

Pamela Adlon
as Lilli Hornig in Oppenheimer (2003)

Mark Ruffalo
as Kenneth Bainbridge in Oppenheimer (2003)

Henry Thomas
as Richard Feynman in Oppenheimer (2003)

Harry Connick Jr.
as Robert Serber in Oppenheimer (2003)

Gregory Sporleder
as Hans Bethe in Oppenheimer (2003)

Ian McKellen
as Vannevar Bush in Oppenheimer (2003)

Colm Feore
as Isidor Isaac Rabi in Oppenheimer (2003)

Željko Ivanek
as Haakon Chevalier in Oppenheimer (2003)

Jon Voight
as Gordon Gray in Oppenheimer (2003)

Jim Caviezel
as Senate Aide in Oppenheimer (2003)

Tom Sizemore
as Kenneth Nichols in Oppenheimer (2003)

Andrew Divoff
as William L. Borden in Oppenheimer (2003)

Tom Noonan
as Patrick Blackett in Oppenheimer (2003)