Fox News's Rupert Murdoch looks at news as a business. He and almost everyone else on that channel probably don't believe half the stuff they broadcast. For example: Fox is very liberal in China, which helps serve their financial interests (though a Chinese liberal might have the same view point that Glenn Beck pretends to have, for all I know).
In general, though, there's very few non-partisan broadcasters. Even outside of politics, there's just way too much money to be made by being sensational. This is why, in all the fervour about Michael Jackson being dead or Angelina Jolie being pregnant, there's just no room to broadcast about important things, like this poor woman
**, or the passing of Norman Borlaug
I tend to read and watch everything to get a general objectivity about what's going on***. Actually - this is weird - but Jon Stewart is pretty much the only non-partisan newscaster in the West right now. I mean, sure, he pretends
it's all comedy, but you do also get the news, plain and without any dressing.
*I should say "I hope he pretends to have." That man scares me. I refuse to believe that someone could actually be that delusional.
**Story may induce rage. You've been warned.
***Though Fox do seem more of a comedy channel at times; that was my first impression of them, by the way: that they were a comedy channel. For those first five minutes, Ann Coulter was my favorite comedian ever. Then, realization hit.