How the Grinch stole Christmas by Dr. Suess incorporates Sigma Kappa Ritual and I have heard some Sigma Phi Epsilon ritual as well.(So I've been told.) Dr. Suess was a Sig Ep, his wife was a Sigma Kappa and they worked on the cartoon version together.
Another Sigma Kappa movie is Mystic Pizza, a great movie about sisterhood. You would never know it was about Sigma Kappa unless you were a sigma kappa. The writer was a Sigma. I highly recommend seeing it if you havent already!
Barney was also created by a Sigma Kappa, however I do not recommend watching it for too long!
I am so going out and renting that book you guys were talking about!!!!