Most of us have a pretty clear picture of what a pop idol looks like. Young. Glamorous. Maybe wearing something sparkly. Definitely not someone who remembers what life was like before television. So imagine the surprise when Japan’s newest internetThe InternetThe Internet is a vast network of computers and other electronic devices connected globally, allowin… More is a vast network of computers and other electronic devices connected globally, allowin… More sensation turned out to be an 87-year-old great-grandmother from Hiroshima named Hiroko. And she’s not alone. She’s got backup dancers.…