Guest Stars Michio Kaku as Himself (Theoretical Physicist) Jim Al-Khalili as Himself (Theoretical Physicist) Karen Gillan as Herself (Karen Gillan / Amy Pond) Natalie Morales as Herself (Actor) Dallas Campbell as Himself (Actor, Screenwriter) Steven Moffat as Himself (Show Runner, Doctor Who) Alison Haislip as Herself (Actress, G4 Correspondent) Scott Adsit as Himself (Actor, Comedian) Maggie Aderin Pocock as Herself (Space Scientist) Kurt Braunohler as Himself (Comedian) Godfrey as Himself (Comedian) Chris Phillips as Himself (Imperial College, London) Chloe Dykstra as Herself (Actor) Kevin Warwick as Himself (University of Reading) Bruce Drinkwater as Himself (University of Bristol)