Today I just tested ClickTracks and what a great tool for analysing your website. When doing interaction design, it is very valuable to know how users are navigating through the site and ClickTracks can tell you that - right on top of your pages. A client application is installed in a few minutes, and if you have your web server logs available on your computer or by FTP, ClickTracks will scan the log and visualize it! Of cource it would have been great if you didn't have to install a client application to view stats, but I can live with that!
This sure beats Webtrends, hitbox and livestats!