Banned Books Week in the US began on September 25 and runs until October 2, 2010. The Huffington Post has created a list of 15 of the most iconic, popular, and/or celebrated movies of all time (with short clips). All of these movies are based on books which have been challenged or worse.
According to the American Library Association (ALA):
Banned Books Week (BBW) is an annual event celebrating the freedom to read and the importance of the First Amendment. Held during the last week of September, Banned Books Week highlights the benefits of free and open access to information while drawing attention to the harms of censorship by spotlighting actual or attempted bannings of books across the United States.