Underground and older Hip Hop is more populated with talented artists that the mainstream, however. Del The Funky Homosapien, Hieroglyphics, Souls of Mischief, Wu-Tang Clan, Binary Star, Aesop Rock, Murs, MF Doom, KRS-One, Mos Def, Talib Kweli, Craig Mack, Tupac Shakur, Notorious B.I.G., and Big L are just a few of the many very talented MCs in underground and golden age hip hop. And its about all I listen to within the genre now-a-days.
It's official: mainstream popularity really does kill off creativity.