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
Funny this kind of question comes up couple of times per week at least recently.
What I can say, only about the layering of the different projects, accordingly to my experience and feedback I've got, is to check question and my answer here:
MVC3 and Entity Framework
RKP this is not answering all and completely to your question, is about layering the architecture and some ideas on why only (see comments under my answer).