I have taken notes on information of the DVD commentary tracks and will add them to my essay, one commentary on 'The Joy of Sect' has given me alot of information regarding media and religon which I can use. I have also taken out another book from the city libuary called Simpsons Confidentail http://en.wikipedia.org/wiki/The_Simpsons:_An_Uncensored,_Unauthorized_History) although its 100% unofficial it does provide lots of comments and quotes by the behind the scenes people that I can use for my essay.