I thought "Signs", the movie he did with Gibson, was one of the most unusual I had ever seen. A science fiction film with a strong faith component - very odd, but well done. If you haven't seen it, you should. Hard to describe otherwise.
I agree, When faced with this awful danger, it was his reevaluation of the recent events that brought him back to his faith.
I have only seen 6th Sense and not the others. I want to see Signs. As I understand from my readings about the director, he is a converted Catholic and is weaving his questions/beliefs of religion into his movies. It is good to ask questions. Dean Koontz's latest novel -THE TAKING - is along this theme - a merging of science fiction with religion. It is spooky and makes you think - something good entertainment should do.
Red