I'm not much of a fan of the genre anymore, but I did like some stuff in the late 80's and early 90's. I figured I would sneak this in and see what others here liked before Board-O comes back and reminds us all that it isn't music.
Public Enemy - It Takes a Nation of Millions to Hold Us Back
Ice Cube - Death Certificate
NWA - Straight Outta Compton
Ice-T - Original Gangster
Dr. Dre Featuring Snoop Dogg - The Chronic
Aside from the violent, misogynistic and sometimes racist content of a lot of the lyrics, I felt that these albums all did a good job of telling stories. One can argue that the lyrical content makes the music garbage, but if that were the case than a lot of well-regarded books, films, etc. would be slagged off as well based on what some deem offensive.
For those who were/are fans, please chime in.