I'm always surprised at what shows up on the lists of books that have been challenged or banned. One of my favorites that's also a perennial favorite on the banned books list is The Lord of the Rings by JRR Tolkien (No. 40 on the banned and challenged classics).
In case you didn't know, yesterday was the birthday of both Bilbo and Frodo Baggins. I wonder if that's why they chose this week to celebrate Banned Books Week?