I just wanted to mention a book that my friend Henrik Joreteg has now released: Human JavaScript - Practical patterns for simple but powerful JavaScript apps.  I used to work with Henrik at ESRI and had the opportunity to share with him for a long time..  He is an awesome dude, incredibly smart and we called him the "Vikingo" due to his Viking roots.  Best of all, he knows his JavaScript.  This book is tremendous for both newbies and gurus alike.  I hope you like the book as much as I did.  Here is his awesome intro video: