Craig Brown in the Telegraph has a very funny reductio ad ab-sir-dum of the Disgusted in Tunbridge Wells genre of letters to the editor, linguistic subsection: The collapse of the English language. It starts thus:
SIR – The word I have just written is surely the most commonly mispronounced. In these sloppy times, why do so many people insist on saying “sur”?
R. Birtwhistle, Bicester
…and descends into a maelstrom of increasingly crazed prescriptivism. (Thanks, Paul!)