WHAT?!?! Em as in Eminem? What the hell are you smokin?

Tonedeff (If 13.5 sylables a sec. aint fast your'e either stoned or drivin' a ferrari), Twista 'n' Spitfya are the fastest

Busta can be fast and also Bizzy 'n' Krayzie from Bone Thugs are still fast.

But Em? The fastest verse I've heard him spit is on "Forgot About Dre" and I mastered that within an hour of hearin it!