Today's APress Deal of the day at
http://www.apress.com/9781430225294 is Pro ASP.NET 4 in C# 2010
"ASP.NET 4 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."
This is an excellent book that I recommend to all C# Development teams.