Michael Flatley recalls being warned not to embarrass Irish dancing

"I don't think I've ever mentioned it before," he says, "but right before I went on stage, they came to me beside the stage and said: 'Please, we're getting calls from all the dance teachers. Please don't wave your arms around, you're going to make us look ridiculous in front of the world, so can we just ask you this time whatever happens, can you keep your arms down?'