I might add, it's a masterpiece of non-intuitive navigation. I cannot control it with a mouse, which is what I expect to do. Worse, my mouse disappears when I mouseover the page (in FF at least) suggesting the page is broken.
I can control with a keyboard, but the only thing that made me try it was your comment about using the keyboard....how is a casual visitor supposed to know that?
To quote Steve Krug (see my sig) - don't make me think! (I know it's not your site, but bear in mind the usability!)