Willy Wonka turns 50 – just what were those filmmakers on?

If you’re one of the millions who grew up with the 1971 classic Willy Wonka and the Chocolate Factory, you’ll recall the moment legendary chocolate manufacturer Willy Wonka, played by Gene Wilder, finally appears. Emerging from his factory for the first time in years, he limps across the cobbles, leaning on a cane. He’s flamboyantly dressed – purple frock coat,

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