If you have never heard of Wordle.net, take a look at it as it is a quick way to see the key words from text - and in government to look for bias.  For example, the top set of words is from the text of Obama's speech (+ applause!), the middle is from the liberal leaning WashPost and the bottom from the conservative leaning WashTimes.  You can click on each of the images to make them larger.