The November Greater Charleston .NET User Group (GCNUG), held at Cambar Solutions in Charleston, SC on November 15th, had an excellent INETA speaker, Stephen Walther - http://www.superexpert.com/ .
The topic was (1) Advanced ASP.NET AJAX : Building Pure Client-Side AJAX Applications.
In this talk, you learn how to take advantage of the Microsoft AJAX Library to build pure client-side AJAX applications. First, you are provided with an overview of the Microsoft AJAX Library. You learn how to take advantage of Microsoft's library to extend JavaScript with support for namespaces and class inheritance. You also learn how to take advantage of Visual Studio 2008 JavaScript intellisense support. Next, you learn how to call web services directly from the browser. Finally, you learn how to build custom ASP.NET client-side AJAX controls.
I highly recommend this speaker and this particular presentation.