Setting television viewership records with the Super Bowl has become almost routine, but this year's average of 111.9 million viewers for Denver's victory over Carolina is down from the past two years. The Super Bowl had seemed to know no ceiling in popularity, setting viewership records in six of seven years until this one. CBS, the nation's most-watched network, had pushed the event hard the past few months, playing up the historical nature of the 50th Super Bowl game. More...