With the help of the NuGet and the Ninject extensions Ninject.MVC3 and Ninject.Extensions.Conventions, you can get dependency injection up and running with just 1 line of code!
I'm writing an application that uses NHibernate as the data layer, but is required to integrate with an existing Umbraco system. Specifically, I have a User class that needs to map to an Umbraco member.