Adsense new reporting has been in beta since Nov 2009 and I only just got it. Awesome. If you are still in the old interface you may be able to forrce your dashboards to change by using this link. It is actually pretty good, and has a definate Google Analytics type feel to it.
On the New Overview How the new reports work.
Rishi Lakhani is an independent Online Marketing Consultant specialising in SEO, PPC, Affiliate Marketing and Social Media. Explicitly.Me is his Blog. Google Profile