I like some hiphop, not a lot, but what I do like would blow 50cent and Eminem out of the water.

Jedi Mind Tricks
Classified
Swollen Members
Mos Def
Blackstar
Saigon
K-os

Any songs by them. Check out Jedi Mind Tricks. Amazing vocalists, amazing writing, so hateful towards organized religion. So if you're a religious buff, avoid them.