Do you want songs, albums, just a name of a DJ/Rapper?
I'll put down a couple of albums which I've personally drank to.
Big L - The Big Picture
Big L - Lifestylez Ov Da Poor & Dangerous
Insane free style, great flow, and of my all time personal favorites.
Notorious B.I.G. - Life After Death
Notorious B.I.G. - Ready To Die
Biggie's stuff recently became popular due to the whole gay movie, don't let that keep you away from his work. He's good, he's been good, and he'll stay good even with all the 13 year old holister twats jerking off to the movie.
Black Star ( Mos Def and Talib Kweli ) - Black Star
I think it was their first album, very smooth shit.
Gang Starr - Hard To Earn
They've got some hits and flops, at times it feels like he's talking to himself, but does it really matter if you're drunk?
Jeru The Damaja - The Sun Rises To The East
A Tribe Called Quest - The Low End Theory
A classic.
That's about it off of the top of my head. I'll post more if you really need 'em.