The first page of the site uses a gorgeous image as the background. When you visit the site, resize your browser window to see how that image fills up the space no matter how large or small you make the page. The navigation elements (the arrows at the bottom) move to remain in the same locations on the page. You then have three choices to get more information: the arrows at the bottom, the button in the middle, or the navigation icon in the upper left.
Traditionalists might not like the minimalist nature of the navigation on this site, but I like how it works effectively and yet is unobtrusive.
This is another HTML5 site that acts more like an application than a website. If you go to the “Bicycles” section, and click on a bike you'll see what I mean. The transition between the bike menu and the bike information page is fun and like a new window in an app.
Have you built an HTML5 site? Or do you know of one that does a great job with HTML5? Submit HTML5 site designs to be featured on this site.