I'm in the process of rebuilding my web site in the open source Joomla CMS, and I also have the possibility of some work building a simple Drupal site.
Imagine my delight on discovering a complete and public reworking of the audience and User Experience interface for the upcoming Drupal 7 by the talented and eminent web designer Mark Boulton.
In this post, he explicitly details working with Leisa Reichelt to create a tool for looking at The Matrix of different roles, site types and numbers of users. It's really refreshing to see a creative process publicly aired, in the true spirit of Free Open Source Software. And as Mark says "what other projects can you talk about as you're doing it?"
To get involved in the process, visit the post and download the PDF!