The Song: "Guilty Conscience"
The Album: The Slim Shady LP (1999)
Why It Was So Crazy: At the time, Em was a young whippersnapper who was learning the ropes from rap veteran Dr. Dre. So, imagine our surprise when he jumped on this collabo with Dre and started taking shots at him in every verse. And, that Dee Barnes line? Yikes! Em proved that nothing was off-limits when he rapped on this song.