Sample N-tier ASP.NET MVC3 application with best practices (using EF 4.1)

Question

I am looking for a sample ASP.NET MVC3 N-Tier application that demonstrates best practices (uses Domain Driven Design and Entity Framework 4.1 Code first). I found the following

Answer 1

Have you seen the following projects? They also have the source code that they can have complete documentation.

http://microsoftnlayerapp.codeplex.com/

http://www.nopcommerce.com