I remember reading a wiki entry about a plot device that Alfred Hitchcock named the "MacGuffin" which wiki defines as "a plot device in the form of some goal, desired object, or other motivator that the protagonist pursues, often with little or no narrative explanation as to why it is considered so important." […]…

Anyone else think that the bearded bald guy in the first scene was Moz in one of his ridiculous disguises? Even the part where they exchanged newspapers was classic paranoid Moz. But by then the camera had zoomed close enough that it was obvious it wasn't him.