An inch wide and a mile deep

Surely you've heard of Inspector Spacetime, the cult British TV series that's run (with interruptions) since 1962. It has a tremendously active, engaged fanbase that's created blogs, videos and music devoted to it. Oh, and one more thing -- it never existed. It was made up as a thirty-second gag on the sitcom Community, as a parody-cum-homage of Doctor Who.