Visual Studio 'Orcas' javascript intellisense

http://ajaxian.com/archives/aspnet-ajax-aware-javascript-intellisense
http://ajax.asp.net/ajaxtoolkit/
http://weblogs.asp.net/bleroy/archive/2007/03/02/asp-net-ajax-aware-javascript-intellisense-available-from-the-orcas-ctp.aspx
http://www.codeplex.com/Wiki/View.aspx?ProjectName=AtlasControlToolkit
http://www.amazon.com/Beginning-ASP-NET-AJAX-Wallace-McClure/dp/0470112832