…VisitorVille!

This thing will monitor your site traffic in real-time by embedding a code into your pages that pings their database when page is delivered. It then renders the data as a SimCity-style town, with visitors from search engines getting off buses to visit your pages. The pages are viewed as houses, for low traffic, or skyscrappers for high traffic.

I dunno if this would actually help analyze your traffic better than other tools out there but it certainly looks more entertaining.

Thanks to Dennis on The Well for pointing this out.