Here is an example of an interesting script. I came across it when some acquaintance of the salesman in my office sent him an email including this clock, they were both amazed by it (hence the email being sent). I saw it on his screen and asked him to pass it on to me. Unfortunately, the creator left no contact information or even a handle. This script's creator remains anonymous to me. A shame, I think.
Personally, I like to spin the mouse around clock-wise. The rotation leads to a most fantastic effect. I should like to make some sort of spinning logo like that someday.
By the way, if you can't see the clock I'm talking about, it is probably a result of the browser you are using. So tough cookies.