#HTML5 Canvas Demo
http://chrislongo.net/html5/canvas/
This is a demo of an effect I've played with all the way back to the x86 assembler days. I'm teaching myself HTML5 so this seemed like a good example to start with. It's either a fire or lava demo, depending on how you perceive it.
I get 60fps on a mid-2011 MacBook Air and the same
an older Mac Pro (desktop). Using Chromium 19. Safari 5
seems capped at 35. My iPad 1 gets less than 5fps :)