"NCIS" is a crime drama that airs on CBS as of 2015. During the 2012-2013 viewing season, the show pulled in an average of 21.6 million viewers weekly.
"Sunday Night Football" was a very close second with an average of 21 million weekly viewers. "Sunday Night Football" airs on NBC. Another CBS show, "The Big Bang Theory," a sitcom that follows a group of socially awkward scientists living in southern California, pulled in about 19 million viewers each week.
A spinoff of "NCIS," "NCIS: Los Angeles" and "Person of Interest" rounded out the top five spots. The ratings included DVR recordings. The top rated show that did not air on one of the four major networks was "The Walking Dead," AMC"s zombie apocalypse drama.
Of the four major networks, CBS led the pack. The network aired more than half of the top 25 shows of the 2012-2013 viewing season. For the 2013-2014 viewing season, however, numbers shifted slightly. "The Big Bang Theory" took the top spot in the ratings, averaging more than 23 million viewers weekly, while "NCIS" dropped to the second spot despite seeing an increase in viewers. "Sunday Night Football" held onto one of the top three spots with a slightly larger audience than it averaged during the 2012-2013 television season.Learn more about Art & Literature