Very Very Very Very excited to see Scott Guthrie's post just now announcing that ASP.NET AJAX 1.0 has just shipped - available here.

A great way to get started with this and to see/show-off the types of things you can do in the Web 2.0 world (which I have recently renamed Web 3.1415926535...It's like Web 2.0 but tastier) without installing a bunch of stuff is to download or play with the ASP.NET AJAX Control Toolkit.

This is awesome... and yet another great release from the ASP.NET team.