Neil Gaiman points out that the development paintings John Watkiss created to try and explain Sandman to Warner Brothers Films are now posted on Watkiss' blog and for sale. As you might imagine (and the screenplays of Sandman I've read would attest to), few are the people in Hollywood who have an inkling of what Sandman is about. Or how to translate it to the screen.
I've posted a snippet of what appears to be a roll call of the Season of Mists cast of characters. That being my favorite story arc, I would love to have this in poster form. I shudder to think what the original artwork must cost. More reason to rob banks for a living, I guess, instead of being a webmaster.