I was looking for a book or video to bridge between Flash 8/AS2 and Flash 9/AS3. I found just what I needed with Flash CS3 Professional Advanced: Visual QuickPro Guide by Russell Chun. Chun has done an outstanding job with the use of diagrams to explain concepts as well as providing a generous number of screenshots. I've even learned a few unexpected things along the way. Having co-authored two books myself (Director and Lingo Bible versions 7 and 8), I know he must have put a great deal of work into this and it shows.