Dr. Dre (real name: Andre Young) is probably the most influential gansta rap producer. In the late 1980s, he was a founding member of NWA (Straight Outa Compton), In the early 1990s he made a solo album called The Chronic. He's been the producer for many of the best know rappers. His protegees include Snoop Dogg, Tupak Shakur, and Eminem.
Since the mid-90's, the only crimes he's committed have been crimes against morals and taste. Despite the general repugnancy of much of his musical message, he has genuine talent and the stuff he produces is a lot more melodious than most other music in the genre. In the words of Maxwell Smart: "If only he had used his genius for niceness instead of evil."
Which is akin to saying that Charles Manson is one of the most fly mass murderers. Fo' shizzle.
I am no fan of hiphop and yes it looks like Dre has saavy bit since NWA, it looks like his skill is in producing purveyors of this music genre and lifestyle kulture I loathe.
His boy Snoop has give him some good legs in that world.