VW Polo and Golf
Let's kick off with two microsites from Volkswagen, just to show how different they can be -- even within one brand.
VW Polo

My first car was a VW Polo, purchased in a color I am embarrassed to reveal. But then, if you haven't got an embarrassing car story in your garage, you haven't lived.
What I love about this microsite is the balance between creativity and utility. From the aspirational and inspirational videos to the customize function, VW basically gives you a "build your own" tool kit wrapped into a video-based microsite. Fantastic. This feels as close to a digital translation of a long-form TV commercial as you're going to get.
VW Golf GTi

A Mark 3 GTi was my second car -- quite an upgrade from the radioactive green Polo. I saw this microsite in German and, despite understanding not a word, I was mesmerized. An exciting site for an exciting drive -- just the way it should be. Full-frame video gives a rich experience, and a range of downloads gives users what they want.