The movie grabs your attention from the very beginning and holds onto you until the very end of the credits. I was on edge of my seat the entire time. All emotions were tapped into at one point or another. I'll probably see it a couple more times, it was that good. Robert Downey Jr., did an excellent job, much to my relief. After the movie was over I couldn't think of anyone else who could have done as good a job as him.