ultraviolet stories

While watching The Daily Show the other night, I saw a commercial (I hadn't had a chance to DVR past it) for the impending release of the Denzel Washington starrer Safe House in a Blu-ray combo pack. According to the ad, the combo-pack gives you three ways to watch, anytime, anywhere: a Blu-ray disc, a DVD and a digital copy "PLUS all-new UltraViolet." Uh, wouldn't that be FOUR ways to watch anytime, anywhere? While Universal's viewing arithmetic may be faulty, what may be even more off is the fourth billing given UltraViolet. What's UltraViolet? Possibly the future of all home video — if the powers-that-be can smooth out some start-up kinks.