Justin Timberlake is the king of surprises this week, don't you think?!
As we know, the pop sensation, who recently kicked the promotional campaign for his new album The 20/20 Experience into OVERDRIVE, is apparently expected to do something VERY unexpected with his much-anticipated performance at tomorrow night's 2013 Grammy Awards!
But that wasn't all JT had up his sleeve this weekend!
He reportedly caused all sorts of GASPS at last night's launch of the United Nations Foundation's new mobile initiative, mPowering Action, in downtown El Lay, when he joined the scheduled performer Timbaland on-stage out-of-the-blue to re-visit their 2009 smash Carry Out…all in front of an audience that included