I'm really glad this utility is back for Leopard... Thanks!

However, I'm not sure the new UI (while prettier looking) is an improvement on the older versions. The older version more clearly separated system stuff from browser stuff, but more importantly, didn't remove cookies and history along with cache automatically (with no way to opt-out). From what I remember, it only did cache for browsers. I think most people would want to remove cache, but not necessarily cookies and history for a normal cleaning. It would be nice if this were broken apart or a preference or something. Also, the video introduction should be made more clearly optional.