Here's a good article, by Paul Raushenbush, "It Took Pat Robertson and Glenn Beck to Remind Sane Christians of Who We Are and Who We Do Not Want to Be."
Paul makes the very good point that there are plenty of Christians who have a sane faith. I would say we should expect the sane version of these things to be the normal version. And the weird, nutzoid faith of, say, a Pat Robertson, or the anti-social-justice version that Glenn Beck espouses, should be seen as the lunatic fringe.
The normal isn't seen at the fringe, the loud mouths. It's what you see in the average, level headed folks who do normal things and stick to what is in the middle, engaging in the things that are more balanced.