One of my favorites is http://wonder-wall.com/ Some would argue it's not the greatest from a usability stand point but is sure as hell fun.
My only gripe is the fact that i cannot use my trackpad or arrow keys to scroll.
Quick question: Any way to achieve a similar hover effect with html/css/js?
Oh my! For Japanese cooking lovers http://akasaka-akechi.com
Found this the other day: http://noramoji.jp/