Sometimes, Hollywood forgets to take an interest in families; the action concerns a boy and girl who might date (certainly the story ends on or before the wedding day), or the action concerns male colleagues joining up to take on a male villain. So it's a treat to revisit "The Sixth Sense," which is about mothers and sons, and about an actual marriage. "The Sixth Sense” centers on Toni Collette, whose kid seems to have gone mute, or semi-mute. Collette knows something is wrong, but the kid won't spill the beans. (Once, when the kid drew the nightmares in his head, his teacher yelled at him. So the kid has learned to draw smiling suns and rainbows.) The kid really doesn't want his mother to see how profoundly alone he has become, so he pays the local bully to *seem* friendly on the walk to school. Off the Philadelphia streets, in a classroom, the bully can resume bullying. But it's those crucial "public" minutes that need to seem G-rated (becaus...