In the scene where Dunn confronts his first 'bad guy' the camera angle is low, viewing the scene from the floor up as you see this monster of a man who has just made orphans of two teenage girls. He looks menacing and strong. When Dunn grabs a hold of him, the camera slowly rises — as Dunn continues to gain an upper hand we are witness to a bad person's slow demise with good coming out on top of evil. This scene is harrowing and extremely emotional as Dunn struggles to overcome the strength of this man, but does not falter because he doesn't feel pain, but you can see the struggle.
The movie is a departure from the usual hero/villain movies we have all come to know. It usually begins with the villain doing something terrible to the hero or his family and the hero vowing revenge at all costs. There's no formula here. It's a thriller that draws you in slowly, with a tension and unease not seen in other films.
Why do I say it is better than 'The Sixth Sense?' Well, when you remove the surprise ending (which was good, don't get me wrong), we're left with a conventional suspense/horror movie that relies on fast camera shots and loud bursts of music to jolt the audience. 'The Sixth Sense' was an example of very good movie making. 'Unbreakable' is an example of excellent filmmaking. If you have only seen 'Unbreakable' once, then I urge you to rent it and watch it again.