I knew nothing about Muhammad Ali's life story going in, so this movie was a very eye-opening experience for me. I like how the movie wasn't simply a boxing movie, but really dug into all aspects of his character, including the social and political realms he affected. His motto, "float like a butterfly, sting like a bee," could describe this movie as well. It flows naturally from scene to scene buoyantly and then strikes the viewer hard when the fight scenes occur. Technically, this movie matches Mann's other works. The crisp and beautiful cinematography by Lubezki is exceptional in this piece, bringing a visceral realism to the fights and ethereal fluidity to the rest. The music was spot-on, although sometimes a bit too prevalent. The acting by all parties was outstanding, although I think Smith's acting in the title role was slightly too weak to carry the entire picture (although quite strong overall). But it was really fun to hear Ali trash-talk.It did have quite a few problems as well, I thought. It was too long. It meandered in meaningless areas that I never really cared for (although more knowledgeable fans might have found them interesting) and unexplained subplots. A firm sense of time and place was never really achieved. There were no dates or locations to inform the audience; the only markers were social events like Malcolm X and Martin Luther King Jr.'s deaths. The problem with the amazing cinematography was that Mann got too enamored of it, unable to cut parts out to keep the piece tight. The editing was competent for the most part, but failed to impress. Other than these minor squabbles, though, I really liked the film.
IMDb link: http://imdb.com/title/tt0248667/