WorldLondon 2012: NBC coverage most-watched TV event in US historyKatrina JonesAugust 14, 2012August 14, 2012 by Katrina JonesAugust 14, 2012August 14, 2012 Washington: London Olympics made the history as NBC’s TV coverage showed that it was the most-watched television event in US history, with some 219.4 million...