My parents got me a Kindle for Christmas, and I'm pretty psyched. I really do love actual books, and I'll still buy and read them, but man - I love knowing that I'm always less than a minute away from being able to download pretty much any book I want to read.
My idea is that if I read a book on my Kindle that I just absolutely love, I will then buy that book in the hard copy form and add it to my bookshelf.
Almost every classic is either free or less than a dollar, which is awesome.
The other plus? It keeps me from skipping to the end of the book to find out what happens. I know. I'm so, so bad about that.