Guillermo Del Toro's new movie looks pretty sweet: Pan's Labyrinth
Anyways, he's having a sketch contest here: Contest
The interesting thing is that he's not a bad little sketcher himself. And I particularly liked his commentary that is played over the first actual page of his sketchbook (about the mill and composition). Nothing astounding to most of us, but it's still cool to hear him talk about it.
Anyways, check it out if you have some time.