We watch “Hide” (Series 7, Episode 9) where the Doctor and Clara travel to Tom Baker’s fourth Doctor era (that’s 1974 to you young uns!) and encounter alternate history’s Wolverine in an un-aired episode of Ghost Hunters UK. Whilst in said groovy era, this Doctor makes several call-backs to other past Doctors (holla to 3rd Doctor for Metebelis III blues stones and 10th Doctor orange space suit) and Clara resists the urge to ‘Farah Fawcett’ her bangs. Ask your dads about Farrah. Her poster brought most of them into manhood. Gross but true.