From that gay kiss to dragon slaying, festive TV adverts speak volumes about the broadcasters.
Dennis Potter's 1986 story of a writer in need of psychological renewal rewrote the TV drama rulebook.
BBC One's The Living and the Dead revels in the Victorians' obsession with the supernatural and the limits of science.
When it comes to branding, the UK broadcaster has always left the rest behind. But by ditching the "4" from its screen idents, it has stepped into another space entirely.