The biggest thing on broadcast TV this fall is the NFL. It's beating the shiny new network shows and, get this, 13 of the top 15 broadcasts this fall were NFL games — the other two were Two and a Half Men. The NFL is killing on cable, too. AMC's The Walking Dead shattered records for a cable drama this year, with had an audience of more than 7 million viewers for its premiere. But another cable series that nearly doubles that number week in and week out is ESPN's Monday Night Football, averaging nearly 14 million viewers per game. It's not news that the NFL rocks the other sports in TV ratings, but for the past few years its ratings dominance has spread to all of TV. So why the rise? Are more women watching? Is it because it looks good in HD? Maybe it's because sports are made to be watched live?