I just made a video presenting Script# with ASP.NET AJAX and my Visual Studio Add-in for Web Service support.
You can see it here: http://blogs.labo-dotnet.com/simon/videos/DemoSSWS_fr.wmv
It is in french, and I don't know I will have time to make an english traduction... So if you are intersted in doing this, please contact me.
You can download the base solution (without Ajax), and the end solution. In both cases you will need the Northwind DataBase (SQL Server or Access version), and you will have to modify the connection string (and provider name if you use Access version) in the web.config file.