Google Analytics is definitely the most useful website analytical tool out there, and we continue to recommend that you utilize it, but Crazy Egg is a new (free for light use) tool that provides a view of your website visitors that GA can't.
Crazy Egg maps each time and where a visitor clicks on your site, providing you the information in three different visualizations. This lets you easily monitor the "hot spots" on your site that lead to conversions as well as the "dead zones" that go nowhere.
Read on for more about this new tool here.