Can you recoment a book on on Unit Testing and TDD for C# with at least some treatment of Mock Objects?
I have seen this question but it does not seem to mention mocking.
The Art of Unit Testing: With Examples in .NET by Roy Osherove (Amazon Page, Official Site) sounds like what you're looking for. He devotes one chapter introducing the concepts of stub and mock objects (using a "roll-your-own" approach), and then a second chapter on using mock object frameworks, particularly Rhino Mocks. There is somewhat less emphasis on Test-Driven Development, but there is quite a lot of information about TDD available from other sources, and TDD isn't all that language-specific.