I am sure, like me sandy, you are old enough to remember David Frost single-handedly revolutionising television in this country.
His TV show 'That Was The Week That Was' in the 1960's began telvision satire and for the first time ever, politicians were not revered and cow-towed to, but were challenged and mocked as and when appropriate - that is a concept that has lasted until today, and is accepted as part of television's fabric - Frost started it all.
Adfd to that is incredible Nixon interviews, when a serving US president admitted to fraud and deceit - an event never likely to be surpassed in TV history.
The incisive grilling given to insurnace fraudster Emil Savundra was again groundbreaking television. These days, Jeremy Paxman does it as a routine, back then, that type of terrier-like grapling had never been seen on television.
That is why Sir David has his memorial.