We've all heard of the crazy things musicians want in their dressing rooms when they perform. JLo is rumored to demand only white candles and furniture. Madonna won't go on stage if there isn't a new toilet seat in her dressing room backstage at her concerts. And who can forget the infamous brown M&Ms concert rider in Van Halen's contracts? Well, the NFL has a contract rider of it's own - they want the next Super Bowl halftime performer to pay them to perform!