The actor opened up about some much-needed advice he received while making what he called a 'losing effort.'
The 'Oppenheimer' cast also recalls to ET how the filmmaker hand delivers scripts instead of sending them electronically.
Emily Blunt, Florence Pugh, Matt Damon and more left the screening in order to prepare for the impending protest.
Cillian Murphy, Emily Blunt, Matt Damon and more star in 'Oppenheimer,' which hits theaters on July 21.
Christopher Nolan's new film, about the invention of the atomic bomb, is in theaters July 21.
Catching 'Barbie' and 'Oppenheimer' in the same day is a marathon, not a sprint, so be prepared with an on-theme and comfy outfit.
Emily Blunt and Matt Damon chat with ET about their filming their new movie ‘Oppenheimer,’ in theaters on July 21.
Christopher Nolan chats with ET about his new film, 'Oppenheimer,' in theaters on July 21.
‘No Hard Feelings,’ ‘Asteroid City,’ and ‘Extraction’ premiere in June.
Cillian Murphy, Emily Blunt, Florence Pugh, Matt Damon and more star in 'Oppenheimer,' which hits theaters on July 21.
