I found that movie pretty disappointing. So much great historical material, a great screenwriter (Bruce Robinson), and yet such a lackluster movie. Both Shultz and Paul Newman are completely miscast.

The only good part of the film is the subplot about the John Cusack character (loosely based on Harry Daghlian), which is a pretty good re-enactment of the actual incident. That scene (which is on YouTube) is worth watching on its own.

For a much more accurate portrayal of Oppenheimer, check out the BBC miniseries "Oppenheimer" from 1980. In terms of TV, it's positively premodern -- more like a filmed play than a real production. But Sam Waterston is much more true to Oppenheimer's character.

"Day After Trinity" is also a fantastic documentary in this area! It spends a lot of time on Oppenheimer's character and has interviews with a bunch of his former colleagues.

Obviously also check out the show "Manhattan"

If you can find it, the radio play “Atomic Bombers” is excellent.