Few celebrity siblings can emerge from the shadows of their already famous relations to become superstars in their own right and with their own distinct personalities. That's exactly what Janet Jackson did in becoming one of the biggest female pop and R&B stars of the '80s and '90s. Since her breakthrough in 1986 with the album Control, Jackson's career as a hitmaker has been a model of consistency, rivaling Madonna and Whitney Houston in terms of pop chart success over the long haul. A big part...