National Football League (NFL) games are the most lucrative and expensive rights of any American sport. Television brought professional football into prominence in the modern era after World War II. Since then, National Football League broadcasts have become among the most-watched programs on American television, and the financial fortunes of entire networks have rested on owning NFL broadcasting rights.
The television rights to the NFL are the most expensive rights of not only any American sport, but any American entertainment property. With the fragmentation of audiences due to the increased specialization of broadcast and cable TV networks, sports remain one of the few entertainment properties that not only can guarantee a large and diversified audience, but one that will watch live broadcasts.
The Super Bowl often ranks among the most watched shows of the year. Four of Nielsen Media Research's top 10 programs of all time are Super Bowls. Networks have purchased a share of the broadcasting rights to the NFL as a means of raising the entire network's profile.