The ZenHabits Theme for Drupal
When thinking about how I wanted this site to look, the look and feel of ZenHabits.net immediately came to mind. To my excitement, I discovered that the ZenHabits theme is publicly available... for Wordpress. But I'm a Drupal guy. So I downloaded it and ported it to Drupal. Since Leo was so kind as to make it available to me, it seems only right that I make it available to you. And so you may download it here.