Although polyester has environmental problems, it's actually a great choice for a shower curtain in that it lasts a long time, doesn't get too moldy and, when it does get some mold on the bottom, you can toss it in the washing machine.
Anyone Else But You, the song sung at the end of the movie by the two main characters as the kind of de facto theme of the movie, as well as other Moldy Peaches and Kimya Dawson songs found their way into the movie as well.
You can't be sued for telling 20 friends at a party that your apartment is moldy - but you can be sued for handing out 20 handbills on the street claiming the same thing.
Reitman and Diablo Cody settled on The Moldy Peaches, along with the solo music of Kimya Dawson of The Moldy Peaches, as the driving force behind the soundtrack.
Although vitamin E is a good preservative and definitely good for your dog, I don't think that's the answer for keeping your treats from turning moldy.