The Swiss Spaghetti Harvest of 1957

One of the classic hoaxes, this BBC "documentary" showed plucky Swiss villagers harvesting the bumper Spaghetti crop of 1957 from their carefully-tended orchard of spaghetti trees.   It was introduced to the US a few years later when Jack Paar aired it straight-faced on the Tonight show, only admitting to the gag a few days later.