What's expected to be the biggest moment of the 2019 Grammys didn't even involve a musician. It was former forever first lady Michelle Obama's surprise appearance at the award show that had every single person in the audience (and watching from home) explode with excitement. She joined the show's host Alicia Keys with Lady Gaga, Jada Pinkett Smith, and Jennifer Lopez, and immediately the crowd exploded with shrieks, screams, and faces resembling Jonah Hill in that infamous Get Him to the...