Date: Late 1980s

There's no way of knowing this for sure. But we're fairly confident that if Nas had decided to stick with his original rap moniker, he would not be as big a rapper as he is today. Kid Wave's Illmatic? Kid Wave's beef with Jay Z? Kid Wave's marriage to and divorce from Kelis? Uh, yeah, Kid Wave just doesn't have the same ring to it that Nas does, now does it? Changing his rap name may have been the single best decision that Nas ever made.