Otherwise check out "Quick App Clean Cache" in the Market. It's a system wide cache cleaner that works on rooted or NON-rooted phones (the main difference being you still have to clean them one at a time, as opposed to one-click if you're rooted). It will find things you may never have looked for, and display the results based on size, that's cache AND data. Not bad for $0.78 - that's a cup of coffee...