Kanye's first album, which is in my opinion, a masterpiece. Many see Kanye as an arrogant scumbag, because of his latest work / actions, but if you listen to that album, I think you'll have a different view about the guy.
Big Boi - Sir Lucious Left Foot The Son of Chico Dusty (also hip hop and RnB)
The other half of OutKast, Big Boi. I've always loved OutKast, and I think this is an amazing album. Very underrated.
Lil Wayne - The Carter II. (hip hop)
The first album of Wayne I started listening to. Many think bad of Wayne now, and I can't blame them since he turned more into a rapping Bieber popstar'ish, than staying the excellent rapper he was before. Carter II might give you that sound how he used to be.