ASP.NET MVC Web Sites (for study)
Today found out Suteki Shop at this address: http://code.google.com/p/sutekishop/
Since it is open-source and uses the technologies such as ASP.NET MVC3, MVC Contrib, NHibernate, Windsor; it would be interesting to look at.
Another one is Nerd Dinner. http://www.nerddinner.com/. Its source can be found here: http://nerddinner.codeplex.com/