1. This Week in Billboard Chart History: 25 Years Ago, Paula Abdul Led the Hot 100 Again

    February 09, 2015 8:05 AM EST In 1990, 'Opposites Attract' became Abdul's fourth No. 1. Plus, remembering chart feats by Katy Perry, Whitney Houston and Bon Jovi. Your weekly recap celebrating significant milestones from more than seven decades of Billboard chart history Feb. 9, 2008 The Juno soundtrack…