British filmmaker Peter Greenaway once said, "Works of art are never finished, just stopped." That statement may turn out to have been prophetic on his part, as his latest project is "at risk of being cancelled by Italian authorities," according to an article in The Guardian. What's got the Italians up in arms? Greenaway has plans to use Leonardo da Vinci's "Last Supper" next month as a backdrop for a light show, which the authorities worry could damage the 500-year-old masterpiece. Milan's mayor Letizia Moratti wants to cancel the show to protect the art, even though, according to the article, a scientific committee "has concluded [the painting] would not be damaged by the light show."