Modern CSS Layouts, Part 2: The Essential Techniques - CSS Essentials - page 127

• The canvas element. The canvas element creates a blank area of the
screen that you can create drawings on with JavaScript. So, it does
require the use of JavaScript, but it removes the need for Flash or Java
plug-ins. It's supported in every major browser but IE, but you can make
it work in IE easily using the ExplorerCanvas script.
• The video and audio elements. HTML5 can embed video and
audio files directly, just as easily as you would add an image to a
page, without the need for any additional plug-ins.
Some of the new input types in HTML5 will bring up widgets, such as the
calendar date picker seen with the datetime input type in Opera, without needing
any JavaScript. (HTML5 input types test page)
IE Filtering
Aids in: progressive enhancement