11. Eminem on Dr. Dre's "Forgot About Dre" (1999)
Producer: Dr. Dre, Mel-Man
Label: Aftermath, Interscope
Eminem activates full-blown Slim Shady crazy cartoon character mode here, which is when he's at his best, anyway. For all of Eminem's styles, nothing compares to the guy who spits stuff like, "Slim Shady hotter then a set of twin babies/In a Mercedes Benz with the windows up/When the temp goes up to the mid-80s." That maniacal, high-pitched staccato flow is the whole reason the rap world embraced Marshall Mathers in the first place.