We don't get to non-kids movies much, so I'm just now getting around to watching The Dark Knight. In one way, I'm very glad they made the movie. Keith Ledger's Joker is actually someone who could exist; someone who makes sense beyond the comic book buffoon of the TV series.
On the other hand, I'm not sure I ever want to see it again. As I grow older, I don't find it difficult to see the evil in men's souls. It seems that I become more aware of it every day in myself, as I see where I eat a little too much, snap too much at the kids, etc. I don't need a TV show reminding me how base people are (like the new Battlestar Galactica), or a movie to know how depraved and close to the animals man can fall.
We are the only creatures who desire to fall. Our new dog loves us, and loves to be around us. The two cats have traded "the wild" for lots of food and throwing up on our bed. In so far as they can "know" anything, they like where they're at and wouldn't change much. (Well, our alley cat would get rid of the puppy, but he may eventually get over that.)
It's only us humans that want to call ourselves animals, and to say we can't control our impulses. Throw a bone for my pup, and she chases it. Show a man a bit of flesh, and he can control what he does. Seeing what happens when men decides not to control himself just doesn't sit well with my soul any more.
Perhaps that's why I like Iron Man. Tony Stark had an empty soul, and was starting to know it. Bruce Wayne has a dark soul, and thinks that everyone else does too, and that's the natural state.
We Christians know that it may be the "natural" state, but it's not our created state nor the one God wants. God wants us all to be cleansed. God wants to see us clean, and he sent His son to do it.