I don't watch O'Reilly very much. It is true that if I'm going to watch a news channel, it's likely to be Fox, it certainly wouldn't be any of the networks. If ever we needed the fairness doctrine, it's for the oligopolistic networks and monopolistic newspapers. The most democratic media is radio stations (because of their number and degree of competition, apart from the good ole internet, of course), and yet that is where the Democrats want to apply a fairness doctrine.
Actually, I should say I don't watch any television shows on a regular basis. I did start watching 'House' at the end of the season. Interesting character, and if he was a real person, he'd probably be a liberal. I tend to get most of my news from the internet, and I look at everything, even the detested New York Times and Washington Post. I have not watched the Communist Broadcasting System (CBS) for many years, but I suspect they haven't improved one whit.