This is a topic I have been interested in for a while. I have seen it done by some of my colleagues, especially in AIA environments, and I have been waiting to get an opportunity to work on it and document it.
But I recently found a great article from Daniel Amadei here. I strongly encourage you to take a look at it if you are at all interested in test automation and/or continuous integration.
I am planning to build this kind of testing into my continuous integration project here.