BDD, Tech Specs and BOM Reports with xUnit.NET?

I'm a new but huge fan of BDD's approach to software development and "specifications". I have used xUnit.NET , Moq, and an extension for xUnit.NET , which allows me to do BDD style testing (I use testing loosely since its actually not so much testing as defining expected behavior). I am currently running all my tests with ReSharper and its nice to see my specs spelled out in detail and green across the board.

However, now that I use the BDD approach on a regular basis, I want a better reporting solution that can display all the specifications for the system in a good format, which can be referenced as a form of documentation for new devs, during future refactorings, etc.

Does anyone know of any existing tools, preferably free ones, that can integrate with xUnit.NET to provide a well-formatted report?