I (finally) received an invitation code to Google Analytics a few weeks ago. It takes a little while to start collecting data, which I've been doing with Webalizer for probably four years or more.
It has some very interesting features. For the casual piece of internet mastubation like my website, it's probably not as useful as someone running an e-commerce site, but it definately has some cool features.
Typical Top 5 Entry/Exit Stuff:
Page Overlay, to show you on your hyperlinks visually where people are going:
Visitor by region:
Statistics on pages visited:
It's Now Time To Buy The #1 REIT In The World
13 minutes ago