Harry Worth (born: Harry Illingworth)
was a British comedy actor, now best remembered for
his 1960s series, Here's Harry. His standard performance
was as a genial, bumbling middle-class man who reduced
all who came into contact with him (tradesmen, neighbours,
etc) to a state of frustration.
The famous opening credits featured Harry stopping
in the street to perform an optical illusion involving
a shop window. (Raising one arm and one leg which were
reflected in the window, thus giving the impression
of levitation). Reproducing this effect was popularly
known as "doing a Harry Worth".