yeah i was pretty bored with the old one too. i had always intended to change it pretty often, but for whatever reason I never did.
i also considered making it change every time you refresh the page, but once I got that one up there I liked it so much I didn't. also, like nurvonic mentioned, i am debating changing the entire look of the site soon, we will see what happens.
Who can guess what performance that pic is taken from? Probably pretty easy, or is it?