I gave this presentation at the 2010 Scotch on the Rocks conference. It features a brief explanation of why HTML5 and CSS3 are necessary, and then goes on to cover most of the cool new features of HTML5 and CSS3 that are supported across most browsers at the time of publication., including <video>, <canvas>, HTML5 forms, the new HTML5 elements, box-shadow, text-shadow, web fonts, media queries, and more. Companion code examples are available at http://people.opera.com/cmills/HTML5_CSS3_examples.zip