I love HTML5 and I think CSS3 is a huge leap from CSS2. The duo is “the” future in web development. I have worked in two projects in HTML5/CSS3 for one of my clients. Here’s just an example of me “experimenting” with HTML5, CSS3, JQuery to build a Lo-Fi online sketching tool. Completed in under 6 hours. I call it, the “Scribr” 🙂