Stephen Fatsis of the wall Street Journal talks every Friday about sports and the business of sports. And now to the SHOW business of sports. As you probably know, Minneapolis native Prince performs this year's Super Bowl half-time show. Sunday's mini-concert could attract as many as 150 million viewers...including a lot of loyal Prince fans. The Current's Bill DeVille counts himself as a football and a Prince fan. I asked him if he was surprised when he heard Prince would take the Super Bowl stage.