31. "So Far" (2013)
In 2013, Jay-Z and Eminem became the first examples of what happens when the most famous rappers in the world are over 40. While the former embraced his maturity by collecting modern art and basketball arenas, Eminem brilliantly cut a figure as a confused hermit over the churning Joe Walsh riffs of "So Far." Here, he raps about a fan noticing his crow's feet, his inability to understand downloads and Facebook, and still feeling bad when pretty girls catch him picking his nose. Or, as he says to Zane Lowe, "I'm complaining about shit that I have no business really complaining about."