On August 12, Kendrick Lamar did something very few rappers do anymore—he actually named names, A lot of them, On wax. With his furious verse on "Control," a discarded track from Big Sean's upcoming album 'Hall of Fame' (due August 27 via Def Jam), he started a wildfire on the Internet. While there's some debate as to whether it was a diss or not, there's no doubt a flurry of response records are sure to follow. But artists have been flinging flames at each other for years. Here, a mix of the most scorching.