Right-wing propaganda.
Conservatives complain about the "liberal media", but they at least try to be balanced. Even if they don't agree with the opinions, they do present them and give them a chance to speak. I listen to NPR all the time and have heard interviews with Newt Gingrich, Rick Santorum, et al.
Fox doesn't even pretend to be balanced. Obama could cure cancer and they'd find a way to spin it as a communist/fascist/socialist/Muslim plot.
I don't mind hearing a conservative point of view (heck, before they became war-mongering shills for the religious right, I considered myself a moderate) but things have just gotten ridiculous. There is lots of twisting, spinning and distortion all around (on the left and the right) but no where is it more concentrated than on Fox News. And the sad thing is that there are so many Americans who watch it and accept it without a second thought.