Fans watching the Super Bowl 56 halftime show were already treated to a 90s throwback performance with Dr. Dre, Snoop Dogg, Mary J. Blige and Eminem.Just after Snoop Dogg and Dr. Dre got the show started, 50 Cent made an appearance as the second act of the show, beginning his performance by hanging upside down as he started performing, Pittsburgh Pirates Jersey "In Da Club." Before long,...