Everybody knows the excellent things Moffat created in the Russell T Davies era, but most would agree that the Weeping Angels are a special case. Plucked from the unfiltered imagination of the Moff for a story that he admits he put together in a hurry after Stephen Fry's original script fell through, they quickly became one of the high points of New Who. Don't turn your back. Don't even blink. Or they've got you. The Series 3 episode Blink was the second "Doctor-lite" episode and, after the disastrous Love & Monsters the previous year, nobody expected much. But the absence of the main cast actually became a strength for the story. Instead of the Weeping Angels menacing the Doctor and Martha who, as series leads, have Main Character Immunity, the entire episode was carried by a pair of guest stars (including the now globally recognised Carey Mulligan) whose fates were uncertain. Add a thoroughly well-crafted script and the tension from an advancing swarm of Weeping Angels and it spells an instant classic. Whether or not you feel that Moffat did the Weeping Angels a disservice in their later appearances, there's no doubt that he created one of the most recognisable and terrifying monsters in Doctor Who history. Even after Moffat has hung up his pen as showrunner, future production teams would be foolish not to put these scary statues to work.