A resource import model with dependency management and de-duping for HTML5. Once browser support is widespread enough, this will move even more of web application development from the server to the browser.
Dougal is a web developer, and a "Developer Emeritus" for the WordPress platform. When he's not coding PHP, Perl, CSS, JavaScript, or whatnot, he spends time with his wife, three children, a dog, and a cat in their Atlanta area home.