Most of the time, when a villain utters the phrase "You and I, we're alot alike" to the hero, it's cliche. Never is that line spoken in this film, but the theme is very much there, and it's true - both characters are "obsolete" in their fields, but Douglas' character has broken, while Duvall's has maintained his sanity. This film is a FANTASTIC character study, with many levels of subtlties buried in the script. You may often times find yourself cheering for Douglas' character, until you realize he's taken it too far (as in the burger joint scene), and it becomes frightening, almost sad - you can see the misery this sociopathic person is in. Joel Schumacher has taken a lot of heat in recent years as a terrible director (and believe me, I won't defend those particular films - they're awful), but this film alone ought to allay anyone's doubts as to his mastery of craft. Definitely in my top 20 of all time.