Orson Scott Card has made his name by authoring books such as Ender's Game and the Alvin Maker series, but he's a keen thinker on a lot of subjects. (Most really good authors are.) I've met him several times (although I'm sure I don't stick out in his memory), and while I' don't always agree with him, his opinions are always worth reading.
He hits the nail on the head with High Bias. The media isn't just liberal, they're fanatically liberal. Which makes them even more dangerous, from my perspective.