Ok, well, I just saw this 3 hour movie. If you enjoy history, politics and lots of talking then this is your movie. I went to see this movie with my husband who really enjoys history, he like it and gave it an 8 out of 10. He felt they could have gone into more detail about the building of the bomb. The movie started at the end, then watching it was the replay of the scene of events. I think the acting was good but it was mostly a lot of talking, equations and science stuff and passionate talking and loud climactic music. To each their own, this is just our opinions. Enjoy