Okay, this is my entry for the "Most bizarre use of Moodle" competition. In 2003, during work at the Cathedral I attend, (http://www.lichfield-cathedral.org/, if anyone wants to take a look at it) they discovered part of a stone carving dating from about 800AD buried under the floor. They appointed a Project Co-ordinator to head up the research and analysis of it, and as the various people involved in the project were spread across the UK but needed to share information and discuss the ongoing work they wanted to pool everything on a website. It needed to be easy to use, offer secure logons (they wanted to keep some of the stuff away from public eyes until they were ready to publish it), and enable the sharing of files, pictures, etc.
As I was already involved in getting an intranet up and running for the Cathedral staff they asked me to look at this, and as I'd been setting up Moodles for the College where I work Moodle seemed like the ideal tool for the job, as it seemed to do everything they wanted and is dead easy to use. We bought some webspace and a domain name, I installed Moodle on it and set it up, and off they went.
Once the research was done and they were ready to go public with their findings they took any remaining sensitive material off the site and asked me to make the remainder publicly accessible. The Project Co-ordinator tells me that Moodle was a great help in the project, so if anyone wants to see how Moodle helped to uncover the secrets of an object which is well over a thousand years old have a look at http://www.lichfield-angel.net/