Unbreakable
unbreakable has the same oppressive atmosphere as The Sixth Sense. The characters inhabit a world of emotional estrangement and portentous pauses. At any second, their world might crumble into dust or twist into a horribly tangled mess. But whereas The Sixth Sense revolved around the subject of death, Unbreakable revolves around ... I can't tell you. Well, I could, but that would probably ruin the movie for you.