What used to be known, literally, as "the cutting room floor," now exists as a digital bin, an assortment of deleted scenes, unused (and in today's mode of industrial documentary production, perhaps even unviewed) footage -- material that, through its absence, haunts any finished audiovisual work. Often when this material is revealed, on a Blu-ray supplemental features disc, for example, the director's elisions affirm the strength of their initial creative editorial decisions. Other times, parti...