In this week's ALA e-newsletter, two links on this topic in particular stood out to me:
1) Rupert Grint chose A Clockwork Orange as the book he's holding on his READ poster; these celebrity endorsements can be rather effective in getting people to try out specific titles.
2) One librarian in New York has been compiling a list of books that have appeared on the television show Mad Men. Some of the titles may have been part of the storyline while others were just part of the background, but he says circulation of and requests for this books has jumped because of their inclusion on the hit show. And the fact that all the books are accurate to the show's time setting makes the surge in popularity even better, in my opinion. Let's give some older books a chance!