Jumping in a little later here (the perils of living in a different time zone) but I just wanted to lend my support to Murf. I've been the beta for X-rated, and I've enjoyed it a hell of a lot.
There's one thing I wanted to add: the fact that the fic X-Rated, which got slated for being AU, was no more so than tv series to start with, because guess what? BJ never originally existed in the book or movie. As fanfic writers, we can more or less do what we want with him, because he's AU to begin with.