I'm a huge fan of American Psycho, both the book and the movie.
I was recently wondering what type Patrick Bateman must be. After going over everything I know about him, the best I could come up with was that he was an INFJ.
I came to this final conclusion while talking to Meta about how he can identify with Hannibal whereas I can identify with Bateman.
I'll wait till others post their ideas before going into other reasons why I came to this conclusion.