The Goo Goo Dolls' headlining performance at tonight's non-partisan Creative Coalition Inaugural Ball in Washington, D.C., shows that it really is all about who you know.Although the multi-platinum pop trio played a benefit for the Obama campaign in 2007, frontman Johnny Rzeznik says the offer to perform at this year's gala didn't come through agents or managers. It came through a friend associated with the Hollywood-based organization."I was buying a new car, and I ran into him at the car dealer," Rzeznik explains. "He asked if I would be interested in playing their inaugural ball, and I was