I believe that the organized media tries it best to push people away from Christianity. If people followed the ways of Christ, they would be at odds with most of what Hollywood and the media are promoting.
The bias is very plain for me to see, as they try to make someone who believes in something larger than themselves as a "right-wing nutjob".
Now, as many valid things that there is to criticize George Bush on, his belief in God, and how he says that it molds his decisions is probably what the media attack the most. They mock it, and basically say that someone who lets morals control their actions is stupid.