I have to say that I didn't enjoy this movie as much as I thought I would. It was a very compelling story and very well acted but I thought it would be less cheesy and Hollywood at the end. Ron Howard who directed the film did win best director, however he doesn't do anything interesting with the shots until the back half of the movie, when he starts to go through treatment and when he relapses. That being said I hope the reason that he didn't do anything out of the ordinary for the first half of the film is because he is trying to make us feel like everything is normally, so that when the shift happens the audience is caught off guard.
I must say that Russell Crowe plays this character very well because not only does he have to be brilliant, absolutely crazy and carry an accent, but he also has to portray the development of this character from college to near the end of his life and all of the stages of his mental illness in between. The best scene of his performance and of Howard's directing is when Nash relapses and begins to believe that people are still there. There is a very cool pulsing light with a constantly spinning camera as Nash tries to protect his wife and child from a non existent government agent. Crowe's conviction that this person is there really is aided by those two affects because it makes the audience feel uncomfortable and confused. The whole scene is very well done, as is the rest of the movie despite feeling a little cheesy in portions. Overall I give it a 7.5 out of 10