> Does anyone know any other documentaries about this topic? It's a fascinating event to study.

"The Day After Trinity" (1981) is a really, really good documentary on the Manhattan Project. I like that it goes in depth about the characters involved, too -- Oppenheimer was a fascinating person.

http://www.imdb.com/title/tt0080594/

Not a documentary but there's a fantastic book called The Making of the Atomic Bomb by Richard Rhodes. The book also covers the history of nuclear physics.