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) Steven Moffat as Himself (Show Runner, Doctor Who) Alison Haislip as Herself (Actress, G4 Correspondent) Scott Adsit as Himself (Actor, Comedian) Dallas Campbell as Himself (Actor, Screenwriter) Kurt Braunohler as Himself (Comedian) Godfrey as Himself (Comedian) Chris Phillips as Themselves (Imperial College, London) Chloe Dykstra as Herself (Actor) Kevin Warwick as Himself (University of Reading) Maggie Aderin Pocock as Herself (Space Scientist) Bruce Drinkwater as Himself (University of Bristol)