content: I never review books on Amazon, but I had to chime in on this one. I've been using Flash since version 2, and I like to think that I'm doing some pretty heavy stuff with ActionScript. However, just the first few chapters of this book swept away a cloud in my head. I knew about Object Oriented design & structure, and about listeners & event engines and such, but this book made a lot of things very clear about the application of these concepts. I think that you accomplished ActionScripters out there will still find this book enlightening, and for those of you that know AS somewhat, reading this book will put you on the right path.