D is for...
Doctor Who (can't believe nobody did this one yet
)
Doctor Who is both a television show and a global multimedia franchise created and controlled by the British Broadcasting Corporation.
It centres on a time traveller called "the Doctor", who comes from a race of beings known as Time Lords. He travels through space and time in a time machine he calls the TARDIS. This ship — which looks like a small, London police box on the outside — has nearly infinite dimensions on the inside. It has become such an iconic shape in British culture that it is currently the intellectual property of the BBC rather than its actual makers, the Metropolitan Police Service.