If this isn't the greatest thing an up-and-coming rapper could do, we don't know what is. The West Coast's newest and most talked about MC Kendrick Lamar surprised fans at a sold-out show in Hollywood’s Key Club last night (Feb. 10) to a series of special guests including none other than Dr. Dre. "My shit coming—Detox—west coast, stand the fuck up—I'm coming!" shouted The Doc to the sold-out crowd. DJ Quik, J. Cole, Murs and Big Sean were amongst others who showed up in support of the Compton rapper. Watch Kendrick get the ultimate co-sign above.