A few weeks back I saw this Madmanimation but never bothered to travel further up the domain line and see what it was actually promoting. Turns out it's a fine example of the sorts of things easily created with Animatable, a browser based animation tool for creating keyframe based CSS animations. I don't tend to use animations as large presentation / intro-movie style implementations.. so it may not be the tool for everyone.. especially if you're just looking to animate a few elements on your site. But, it looks incredibly well done and will likely prove to be very handy for anyone looking to make an HTML5 friendly animation.