Date: October 2005

We definitely did not see this coming. In the days leading up to the "I Declare War" concert, which took place at Power 105.1 FM's annual Powerhouse concert in Philadelphia, most people thought Jay Z was going to unload on everyone who had ever done him wrong during his headlining set. But instead of letting off a bunch of shots, Jay invited Nas to join him on stage during the show and then performed "Dead Presidents" with him. It was a fittingly dramatic end to one of the greatest battles in hip-hop.