After giving recent sessions on managing a website process at Lullabot's Do It With Drupal conference (slides/video) as well as at Drupalcon DC (slides/video), it became obvious that there are a lot of people interested in the topic.
Almost eight months ago, I started a writeup on one of our great clients, Wellstone Action, in an effort to be more transparent about how we work and share what I felt might be some insights we have.
Those two lines of thought have intersected online at http://drupal.org/node/413910, in a Case Study that dissects the process behind the creation of their very successful website.
We're honored to share our process with the world and welcome your feedback!