Tesla, Elon Musk's electric car and energy storage company is built using Drupal. The home page features an attractive and engaging, fully responsive HTML5 video, with two simple call to action buttons overlaid on top of the video. On smaller screens the video is replaced by static images of the cars. I also noticed that the site uses panels, and the Shopify platform for it's e-commerce shop.
I'm a huge fan of Elon Musk, the world-changing, South African born pioneer of the consumer electric car and space technology company SpaceX, and was pleased to learn that both the Tesla website, and the SpaceX website are built on Drupal. Both are currently Drupal 7 sites with home pages that use beautiful images and videos (in the case of the Tesla site) to provide high visual impact and engagement.