This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
I'm using Struts with Flash right now. It's really no different from using Flash with PHP, JavaServlets, Perl, Python, whatever. The Flash movie is delivered to the browser and may begin sending XML-over-HTTP requests back to the server. There's nothing Struts-specific about that.