Justin Timberlake Helped Timbaland Carry Out A SURPRISE Performance Last Night!

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