Today's $10 Deal of the Day from Apress at http://www.apress.com/info/dailydeal is:
ASP.NET 4 is the latest version of Microsoft's revolutionary ASP.NET technology. It is the principal standard for creating dynamic web pages on the Windows platform. Pro ASP.NET 4 in C# 2010 raises the bar for high-quality, practical advice on learning and deploying Microsoft's dynamic web solution.
I am reviewing this book at the moment but I was already sufficiently impressed by this book to have bought the PDF the day it was available last December.