The 2012 edition of my family website just went live yesterday (missed Leap Day for this post!). I did it up in HTML5...and I'm so impressed with the results that I've decided to switch the main site over as well. Look for it this Spring! I'm going to start pumping out the HTML5 templates soon, too.
In the meantime, here is the very first Web Studio demo video, of the HTML5 template I affectionately call: