Cheerleaders spark fun as well as being a form of recreation for the participants, much sport is played in front of an audience, "Like you the FANS". Most professional sport is played in a 'theatre' of some kind; be it a stadium, arena, golf course, race track, or the open road, with provision for the (often paying) public.
In the United States, the championship game of the NFL, the Super Bowl, has become the most watched on television.
