I almost forgot! It's the 25th annual Banned Books Week. The ALA site has lots of goodies, including a history of banned books and challenges, statistics on banned books, and all sorts of kitsch for sale. They note in a press release that the Harry Potter series tops the list of "most-challenged books in the 21st century."
Google has set up an "Explore Banned Books" page, where you can check out forty-two oft-banned titles via GoogleReader.
And over at LibraryThing, they're running a "Banned Books Bookpile" photo contest.
After you've checked out all those links, go celebrate your freedom to read.