The Graveyard Book raced past every other book in my neat stack when I found it at the sci-fi bookstore. Sorry Russel Brand and Vivian Cash, your autobiographies will just have to wait.
I read Neil Gaiman's blog from time to time so I've followed his work on the book. There is a clip on his website where he explains the origins of the book.
Neil Gaiman updates like crazy and he is posting the entire book in the form of readings from his book tour for free. So far the first six chapters have been posted.
You can find them here.
Now if you'll excuse me, I'm on page 120 and I need to get reading...
But I will say that if you liked his earlier work you'll love The Graveyard Book. And if you haven't seen Stardust, you should.