I was browsing the web, couresty of Stumble Upon, and found a list of banned/challenged books.
http://title.forbiddenlibrary.com/
This one in particular amused me...
- Twelfth Night. William Shakespeare. Airmont; Cambridge Univ. Pr.; Methuen; NAL; Penguin; Pocket Bks.; Washington Square.
Removed from a Merrimack, N.H. high school English class (1996) because of a policy that bans instruction which has "the effect of encouraging or supporting homosexuality as a positive lifestyle alternative."