Oppenheimer Review: 8 Ups & 2 Downs

Based on the premise alone, it's obvious Oppenheimer is a dead-serious drama. But if the tone remained sombre throughout the three-hour runtime, it would be pretty draining for viewers. As a result, Nolan wisely chose to inject a bit of humour, in the form of Matt Damon's character, Leslie Groves.

Being an army general, Groves is a stickler for the rules, causing him to butts heads with Oppenheimer when he doesn't do things by the book. As Groves starts to comprehend the significance of The Manhattan Project, he starts respecting Oppenheimer, even defending him when government officials aren't on his side.

Groves may not sound like a comedic character on paper... and he's not. But Damon's comic timing is so impeccable, he's responsible for the movie's funniest moments.

Even though a joke can deflate a serious scene, this never happens with Damon, since his delivery is always sincere and understated. The fact Damon can make viewers laugh during a scene where Oppenheimer talks about the world ending is a perfect example of the actor's comedic talents.