The Walking Dead executive producer, director, and special effects whiz Greg Nicotero, who was behind the camera for last Sunday’s “Not Tomorrow Yet,” talks to Yahoo TV about how the Saviors make him laugh out loud, how they made Glenn cry, and who he thinks the real hero of the attack on the Saviors was. Related: Catch Up on ‘The Walking Dead’ With Our Recaps I knew this was a Greg Nicotero-directed episode when I saw the scene at the Saviors’ hideout.