Thanks to Rubbishcorp for pointing at this wonderful Oakley site for their new Airbrake MX Google. It's a great piece of merchandising. HTML5 and CSS3 are enabling all kinds of design-rich in-browser experiences using infinite and parallax scrolling (where an illusion of depth is created by background images moving slower than foreground images). One of my absolute favourites is the fabulous Life of Pi site which is quite incredible.
Here's a few others I really liked. Von Dutch used parallax scrolling to tell the story of its original founder in a rather charming way.
This site makes a great use of it to talk about the dangers of fracking. Peugeot created a rather cool autoplaying comic to promote its hybrid technology. Olympic and World champion cyclist Jason Kenny's site is about as nice a personal site as you'll see, and here's a great ad agency example. It's all rather lovely. There's even a rather nice one from a tatoo business.