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''Opportunity Knocks'' is a British television and radio talent show originally hosted by Hughie Green, with a late-1980s revival hosted by Bob Monkhouse, and later by previous winner Les Dawson. The original radio version started on the BBC Light Programme from 18 February to 30 September 1949 but moved to Radio Luxembourg in the 1950s. It was shown on ITV from 20 June 1956 to 29 August 1956, produced by Associated Rediffusion. A second run commenced on 11 July 1964 and lasted until 20 March 1978, produced first by ABC and then by Thames. Hughie Green presented a single episode of Opportunity Knocks for RTÉ in 1979. It was revived by the BBC from 21 March 1987 to 2 June 1990, hosted initially by Bob Monkhouse from 1987 to 1989 (under the title ''Bob Says Opportunity Knocks!'') and subsequently by Les Dawson in 1990. ==Voting system== Unlike its rival ''New Faces'', the winning acts on ''Opportunity Knocks'' were decided not by a panel of experts but by the viewing public. In the ITV version this took the form of a postal vote, the winner of which was announced the following week. The BBC revival was notable for being the first TV show to decide its winner using the now-standard method of a telephone vote. In both versions the studio audience reaction to each act was measured by a clap-o-meter, but this did not count towards the final result. The programme was recorded the Friday before transmission, so votes had to be in by Thursday. They also, according to host Hughie Green, largely to ensure fairness, had to be in "your own handwriting". Although ''Opportunity Knocks'' did produce a number of talented acts, the method of putting the contest to a public vote did sometimes result in victories for novelty acts, in particular those involving children or animals. On one notorious occasion the young Su Pollard was beaten into second place by a singing dog. For the Monkhouse-fronted revival, the voting system was radically changed, making it the first British TV show to use telephone voting in order to get a more immediate result (although an updated electronic "clap-o-meter-style" on-screen indicator, using stars, was used during the show). The telephone voting system is now common on British TV. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Opportunity Knocks (UK TV series)」の詳細全文を読む スポンサード リンク
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