I'm not going to tell you that Neil Gaiman's Sandman series is good stuff because you already know that. If you're even the slightest bit interested in comics and graphic narrative and you didn't know that then I'm going to assume you haven't read it. If that is indeed the case then you should promptly punch yourself in the face and go buy it.
What I am going to share with you as good stuff is The Sandman: King of Dreams by Alisa Kwitney.
Alisha Kwitney was an Assistant Editor on the Sandman series and this table thumping volume is an ode to the character. This is a beautiful book. A hardcover coffee table book jammed cover to cover with glossy artwork from the Sandman series, including concept art, pages from the books and, of course, Dave McKean's haunting covers. We also get a synopsis of the entire series for you to relive the stories you fell in love with - although my one criticism would be that the book is perhaps a little heavy on this.
Most interesting for me are the insights gained into the mind of master scribe Neil Gaiman. His comments and thoughts on the series are spread throughout the book and provide a real thread showing the creative growth of both himself and the story. We also get to see some original script pages and some of Neil's scribbled down notes in his doctor-like handwriting.
I really enjoyed reliving, and getting backstage for, The Sandman, basically this book gave me a giant geek-on and I'm ok with that, it's definitely good stuff.