Book Trailers. The idea is to make a trailer for books and generate excitement just as they do for movies. Some publishers are creating their own, others are being made by book lovers. There are even awards for them. Check out the 2010 Moby Awards (scroll down to second blog entry for links to trailers). Here is a really creative one.
COM Library has a new Book Trailers box on the Best Sellers & Book Reviews tab of the New Books LibGuide. Or you can go to Delicious and see all the Book Trailer sites saved, including how to make your own.