Arena football ( <a href="http://en.wikipedia.org/wiki/Arena_football#Rules_of_the_game" rel="nofollow">http://en.wikipedia.org/wiki/Arena_football#Rules_of_the_gam...</a> )fits that bill, though it would be nice if we could also have NFL-caliber players, full-size field, etc.  Sadly, the long and frequent delays allow for the spectacle at the stadium itself (cheerleaders, dancers, contests) and advertisements elsewhere, so I wouldn't count on the NFL itself doing away with them.