| Credited cast: | |||
| Dustin Lance Black | ... |
Himself
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Scott Nelson | ... |
Himself, technical advisor, FBI
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| Leonardo DiCaprio | ... |
Himself
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| Brian Grazer | ... |
Himself
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| Clint Eastwood | ... |
Himself
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Erica Huggins | ... |
Herself
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J. Edgar Hoover | ... |
Himself
(archive footage)
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| Robert Lorenz | ... |
Himself
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Sheridan Harvey | ... |
Herself, research librarian, Library of Congress
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| Naomi Watts | ... |
Herself
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| Armie Hammer | ... |
Himself
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| Denis O'Hare | ... |
Himself
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| Lea Coco | ... |
Himself
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| Rest of cast listed alphabetically: | |||
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Maria Cecile Callier | ... |
Citizen
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The real story of J. Edgar Hoover, created as a bonus featurette for the DVD/Blu-ray of the film J. Edgar.