Media bias was the topic of discussion on CNN last night. Biased or not, is not really the most important issue. To be completely without bias is likely extremely difficult if not impossible. The most important aspect of a media outlet is its objectivity.
Here is an example of what I mean by objectivity: I have been watching CNN for the last hour or so. Wolf Blitzer on The Situation Room repeatedly used the word desperately, as in "desperately desperately", in describing one of the Democratic candidates. That goes against my understanding of objectivity. What I want from the media, CNN included, is the facts -- nothing more, nothing less. Desperate or not, I believe I can make that judgement myself.
Be objective first. Then talk about bias. No dramatic entertainment necessary.