Cillian Murphy wins best actor for ‘Oppenheimer,’ his first Oscar

A first-time nominee, Murphy won best actor for his stellar role as J. Robert Oppenheimer. The film tells the story of how Oppenheimer and his peers at Los Alamos would test the bomb on July 16, 1945, not knowing what was going to happen — and the ensuing fallout.

The Irish actor, though a regular presence in Nolan films going back almost two decades, had always been a supporting player. This time, Nolan wanted him to lead.

“He’s so understated and self-deprecating and, in his very English manner, just said, ‘Listen, I’ve written this script, it’s about Oppenheimer. I’d like you to be my Oppenheimer,’” Murphy, 47, told The Associated Press last year. “It was a great day.”