Can we have a holographic Beatles reunion next? On Sunday, the King of Pop performed “Slave to the Rhythm” from his new posthumous album, Xscape, at the Billboard Music Awards. The moonwalking Michael Jackson hologram was unveiled with a bevy of backup dancers and flashing lights at the awards ceremony that gave top honors to Robin Thicke, who won four awards, and Justin Timberlake, who won seven. “I want to thank everybody on Earth, everybody on Earth, except, except Donald Sterling,” Timberlake said in his acceptance speech. Miley Cyrus, in her streamed-in performance, dropped an expletive while thanking fans and was bleeped.