I don't find them any more biased than any of the other news networks or outlets, and less so than some like MSNBC and the NYT. I really don't know of any outlet that is completely unbiased, I really don't think it's possible.
There is bias creep here and there for a variety of reasons, but if the goal is fair, balanced, intelligent journalism with no agenda, the last thing you do is hire someone who for many years was an attack dog for one party to oversee it. It's like the fox being in charge of the henhouse. Oh wait!!
Can we just agree that Obama's choice of condiment is not news?

Personally I think this is niche, and really isn't all that signifigant.