Here is a similar type of page but for a Sony Tablet S product http://discover.store.sony.com/tablet/#specs/diagram

Campaign monitor used this effect quite some time ago... http://www.campaignmonitor.com/hiring/

I remember seeing this one a couple months ago: http://www.nikebetterworld.com/

script doing the work: http://www.samsung.com/us/microsite/galaxysII/js/script.js

Quite nice to see in action from a code perspective, but I'm not sure I actually like the final page layout...

Nice idea, but very jerky for me (FF7)