Eminem surprised fans at Wembley when he brought out his mentor, Dr. Dre to perform a couple of medleys together.
?When I say Doctor, you say Dre?, Eminem told fans while performing his 1999 posthumous collaboration with Notorious B.I.G. At the calling, Dr. Dre suddenly walked on stage.
Eminem and Dre performed ?Still D.R.E?, ?Nuthin? But A ?G? Thang? and ?For About Dre?. Watch their performance after the jump?.