Free chapters on ASP.NET MVC
I have to admit that I really like the upcoming ASP.NET MVC ("It will ship in a month ending in -ber") Web framework. It's not as mature as the existing Webform model, but I like how it gives more control over the pages, and navigation of the site. Now, to prepare, Microsoft has negotiated five free chapters out of some of the upcoming books on ASP.NET MVC. Definitely worth taking a look at if you're planning (or developing) a site using that technology.