Movies like Mel Gibsons "signs"

diymirage said
That sounds like something me and the wife would enjoy

Stuff like "the prestige" and "stonehearst asylum"

Movies that keep you on your toes without trying to get you to throw your lunch

An issue you might have with The Sixth Sense is that a central part of the story has ghosts on earth. That may offend a person of faith such as yourself.