John Mcenroe

Brian Viner: Give me passers-by over satnav any day

There are still surprisingly many professional wordsmiths – journalists, novelists, playwrights, screenwriters – who do not know an Apple Mac from a whisky mac or a Pacamac. Some of them are friends of mine, bashing away on their faithful old Olivetti typewriters, or even operating with pens and paper, and frankly I don't know how they do it, but then I am no less of a technophobe when it comes to the Global Positioning System.

McEnroe was right on that call? You cannot be serious!

It ranks as one of the most memorable – and imitated – moments in sporting history. Back in 1981, a young John McEnroe, sporting a headband and frizzy hair, was so furious at the Wimbledon umpire Edward James's refusal to rule his serve in that he uttered the immortal line "you cannot be serious" before subjecting, or perhaps treating, the centre court crowd to a tirade of ill-tempered invective.