This is Jay-Z performing at Hammerstein Ballroom during his recent brief American Gangster promo tour. After a moment of silence for Kanye and the first two minutes of "Roc Boys", he brings Jadakiss out. Jadakiss drops zero verses, makes a general request about a body part, then leaves. Might this be Green Lantern acting on his supposed beef with Jada? For the purposes of the internet, we'll assume yes.