For any progressively-minded person out there who hasn't yet read George Lakoff's book "Don't Think of an Elephant," do yourself a favor and get a copy. It's affordable, incredibly insightful and a quick read. In my opinion it may be the book that helps get the DNC back on track.
For those of you who have read it (or are just curious), here's an interesting interview from Mother Jones with Mr. Lakoff and his views on the 2004 campaign, and more specifically, what the left did wrong and how to approach the problem.