Bruno Mars Hits No. 1

Musician Bruno Mars performs onstage at the 54th Annual GRAMMY Awards held at Staples Center on February 12, 2012 in Los Angeles, California. Photo: Kevin Winter/Getty Images

The sneakily enjoyable “Locked Out of Heaven” bumps Rihanna’s “Diamonds” from the top of the Billboard 100 this week, because the charts want you to have nice things for Christmas. Over on the albums side, Taylor Swift's Red is back at No. 1, and only 85,000 people bought Ke$ha’s Warrior. America, how many times do we have to tell you that “C’Mon” is a jam?