After the magic segment, I believe they went into other aspects of the mind and how it processes information.
I found this particular bit quite interesting (see link below): how the brain's already stored information overrides certain outside stimuli that contradicts previous experiences and expectations about constructions of reality. Like the narrator explains, the mind refuses to see the concave nature of the face because it's so unlikely that such a configuration would exist. This leads us to conclude that when processing information, we only register some of the information that would be necessary to distinguish it from, say, another face. The general overall aspects (i.e. the convex nature of faces) are brought into the picture not from the actual face itself, but from previously stored pieces of information that contributes to the overall "picture" we get after all the old and new bits are (re)assembled together.
I suppose that's why the old adage, "be natural" really does matter, because when what you do follows the natural way of doing things, most sleights will indeed (literally) not be registered when done correctly and with proper natural (mis)direction. When you flaunt skill, it will register and be remembered because it goes against the natural grain of things.
Nothing new has been said here, but it's always cool when science does indeed back up the theory.
Finally, I believe the scientists who studied the magicians on the program also put out a book on their findings. I think it would be a fine addition to any magician's overall understanding of what goes on in the spectator's minds when we do our tricks.