• A Journey with NHibernate – Part 1
• A Journey With NHibernate – Part 2
• A Journey With NHibernate (and DDD) – Part 3
• A Journey with Domain Driven Design (and NHibernate) – Part 4
• A Journey with Domain Driven Design (and NHibernate) – Part 5
• A Journey with Domain Driven Design (and NHibernate) – Part 6
• A Journey with Domain Driven Design (and NHibernate) – Part 7
• A Journey with Domain Driven Design (and NHibernate) – Part 8
• A Journey with Domain Driven Design (and NHibernate) – Part 9

The source code for the book .NET Domain-Driven Design with C#: Problem-Design-Solution is available online at CodePlex.

An article titled Attribute-flavored Domain Driven Design at CodeProject.com includes the source code for a naked objects-like implementation of a domain model.  A fairly bare-bones implementation like this might be an interesting place to start building my own GUI.

David Hayden talks a bit about using the Active Record pattern in DDD in his Domain-Driven Design Using Active Record in .NET article.  He also talks about application layering in Domain-Driven Design – Layered Applications, which refers to some sample code for a shopping cart.