Drawing Application - HTML5 Canvas
One of the most exciting new elements in the HTML5 specification is the canvas tag. This provides a bitmap canvas on the page that can be manipulated via JavaScript to display both simple and complex shapes which could previously only be achieved through the use of images.
The canvas tag can be used for a range of different things like displaying graphs, charts or other statistical data. Currently there are lots of webmasters testing out what the current implementation of the canvas tag can do, a list of examples can be seen at the following site:
http://www.phpguru.org/static/html5-canvas-examples