If you've seen Inception, this blog post has found a way to relate heaps of the scenes and characters and symbols in the movie to Jung's Shadow, really interesting stuff and some of the comments also have some good ideas in them :)

The abstract for this article on its page is "Jung identified the Shadow as one of the four principle archetypes of the collectiveunconscious. It is composed of the dark elements of the personality, having an emotional and primitive nature which resists moral control." It's only two pages and gives a pretty in-depth outline of Jung's concept of the shadow :)