Sling TV has updated its lineup again. Sling Blue customers now have access to NBC On Demand at no extra cost. NBC On Demand lets subscribers watch many popular NBC shows after they have aired on broadcast television. Currently available shows include episodes of "America's Got Talent," "American Ninja Warrior," "Better Late Than Never," "Dateline," "Hollywood Game Night," "Meet the Press," "The Tonight Show Starring Jimmy Fallon," and "The Voice."