I am about to pass Tracy Flick as a good article for the reasons listed above.  It is clear and concise and unbiased.  Nothing in the article can be challenged that I can see as everything is referenced and cited where it needs to be.  The only suggestion I can make to improve the article is before you edit it, make sure your edits aren't mentioned elsewhere.  Tonight I moved part of the intro as it was already touched upon elsewhere in the article