[randallu]

Can't wait to see CSS Shaders land, then we can do this and correctly deform the HTML to make it look like it is on the "paper" (instead of being clipped to the paper). Still, with the curves they use it looks pretty good as is.

It's nice to see the web platform is capable of effects like this and I think the "usability" complaints in other comments are lame. You could use this to hide controls underneath a UI (ala Maps on iOS), for example (though maybe if you're "zen of palm"ing it you'd rather minimize clicks and put buttons everywhere, your choice); it doesn't have to replace scrolling.

[jameshsi]

Great point about the usability possibilities. There are probably tons of creative ways to use this effect since it's SVG based. I found myself assuming too that this would be used as presented (as a flipbook) so I think this experiment becomes even cooler once you get outside that frame of reference.