Greg Nicotero is a special effects legend. From kicking off his career working with George A. Romero on Day of the Dead to his current role as Walking Dead gore guru - goru? - and director-cum-producer, he's seen everything that could possibly be covered in fake blood be covered in fake blood. Here, he talks all about his life in the business, including the emotional farewells he's given to beloved cast members killed off the incredibly popular show. So, to give fair warning, if you're not full up to date with The Walking Dead Season 5, go and watch it all, then come right back and listen to this.