Architectural Blueprint for Flex Applications (MVCS)
If you didn't catch Joe Berkovitz's talk at MAX 2006 about an architectural blueprint for Flex applications, it is now posted on Adobe's Flex Developer Center. Joe is the Chief Architect of Allurent, where I work. It is a great read and introduces the concept of Model, View, Controller, and Service (MVCS). Best of all it comes with a sample application that embodies all of the principles outlined in the article.