Now streaming on Shudder is the new horror anthology series Creepshow, a modern take on the classic 80s movie franchise. From showrunner Greg Nicotero (The Walking Dead) comes this weekly series featuring nightmarish short-form adaptations of some of the top horror writers around. The whole thing kicks off with a sequence dubbed "Gray Matter", based on a short story by the one and only Stephen King, and adapted for Creepshow by Philip de Blasi and Byron Willinger (The Commuter). And that segment just so happens to be the one Nicotero & Co. were filming when we visited the set. …