This is my first attempt at a PureMVC application, so I'm open to constructive criticism. The zip has both the Ruby/Rails and the Flex source, and it's too large to upload to this forum. I also don't have Rails hosting as yet, so there's no online demo, but you can get the zip and read a fuller description of the application here:
http://www.robsondesign.com/blog/index.php/2008/01/28/flex-on-rails-iteration-one/Let me know what you think!
- Jim