I may be liberal, but even this made me tense.

If you haven't heard, Stephen Colbert (formerly of the Daily Show and currently of the Colbert Report) recently roasted President Bush at the White House Correspondant Dinner this weekend. He was amazingly biting - Jon Stewart's appearance on CNN pales in comparison.
Here's the video. Check it out, but I warn you - it's brutal...as the truth often is.