Dr. Pychyl has an interesting podcast series on procrastination. Is procrastination related to certain personality traits? Taxes and other aversive stuff: Why do we put it off? Give them a try if you are interested in those questions.
The main difference between these podcasts and the heaps of information that are available on the web about procrastination is that this comes out of a psychology lab.
If you find a good resource (even peer review ed ones ) on procrastination, please post it here.