I LOVE this movie!!! I actually just watched it two weeks ago. But I do disagree with some of mico's diagnosis'. Just as a sidenote, no I am not a professional counselor, yet. (I will be in May though!) So while I have been doing diagnosing at my internship, I am still learning so these are just thoughts.
Dr. Marvin does not appear paranoid, this would have been manifest with others in his life as well, not just with Bob. I've seen someone with Paranoid Personality Disorder and they believed that everyone, specifically the police, were out to get them. It seems to me that Leo has several traits of Narcissistic Personality Disorder.
Bob, I think was well diagnosed. I was thinking of adding Histrionic Personality Disorder though.
Faye, I think she has tendencies of Dependent Personality Disorder. This goes with her husband being Narcissistic. Many people who have significant other's with narcissism have dependent.
The kids, I completely disagree with mico but she did say she didn't actually think they had any disorders so I'll just refer back to that.
Does anyone else have any thoughts? Unlucky Stuntman, and TBS, I would especially love to hear your thoughts, hint hint!