I rewatched this in a theater today and by the time the credits rolled I was completely contorted into some sort of bizarre ball, one hand on top of my head and the other arm covering my mouth.
Nothing can prepare you to watch this film. Not even having already seen this film prepared me to watch it again. It is a movie that means something different to every single person who sees it, and something different to each person each time they see it. It is the most emotionally arresting film I have ever seen. It's a masterpiece in every sense of the word.