Forget David Blaine’s recent antics of hanging upside down for 60 straight hours in New York City’s Central Park. The real challenge of human endurance commenced yesterday morning about a mile south of Blaine’s stunt, in the middle of Times Square. There in a makeshift “plexi-glass living room” for the world to see, eight brave souls commenced a competition to determine who is the world’s greatest couch potato.   The Netflix Movie Watching World Championship: The Quest for the Popcorn Bowl underway in New