Been thinking about this recently for a client pitch. Friend of mine shared these resources, I found a few more. Worth plonking here, if only to know where to find them later on. So, in no particular order:
http://www.useit.com/alertbox/20021014.html
http://www.useit.com/alertbox/20021125.html
http://www.macromedia.com/desdev/education/
http://www.macromedia.com/desdev/education/articles/learning_resources.html
http://www.macromedia.com/macromedia/accessibility/
http://www.alistapart.com/stories/unclear/
http://www.alistapart.com/stories/politics/
http://www.oreillynet.com/pub/a/javascript/2002/11/08/flashmx.html