As some of you may know, I work at Microsoft on the Blend team. My job is to help design features that allows someone to visually build/design HTML5 applications destined for Windows 8.
Last week, I did a recording for Channel 9 that gives an overview of how you can do more with HTML5 without writing markup manually. Along the way, I cover some nifty features as well :beam:
You can watch the video here: http://channel9.msdn.com/Shows/Visual-Studio-Toolbox/Visual-Studio-Toolbox-Blend-and-HTML-flavored-Metro-Style-Apps (I would suggest downloading the high-res version to get a less blurry version of everything)