If you have time for books, I'd recommend both her memoirs. You can get a good sense of her voice from "The Republic of the Imagination", which she links to in pdf form on her home page:
http://azarnafisi.com/articles/

I also enjoy her commentary on contemporary events which is usually in the form of interviews with her.
http://www.identitytheory.com/interviews/birnbaum139.php
http://www.theatlantic.com/magazine/archive/2003/05/the-fiction-of-life/3089/
http://english.aljazeera.net/news/middleeast/2009/06/2009613181040285185.html