A CodePen by Tim Pietrusky. Return to the Scroll Effects of the Future! - Hakim El Hattab "stroll.js" meets Tim Pietrusky "CSS3 filter extension".   
   
   
If you don't see anything (cause this is webkit-only for the moment) you can watch it on #YouTube here: http://timpietrusky.com/return-to-the-scroll-effects-of-the-future