Just got a copy of this new book on ASP.NET AJAX and it looks great.  It should be because Matt is the Development Manager for ASP.NET so he deeply understands the product.  He has also worked on several other books and I can personally attest to the fact that he can indeed form complete sentences. 

 

Professional ASP.NET 2.0 AJAX

 

Professional ASP.NET 2.0 AJAX

Enjoy