1. Boots Riley
Riley doesn't rhyme about bubbly and bitches, he spits revolution -- with an awesomely sly sense of humor. Whether with The Coup, or his sadly underappreciated new project with Tom Morello, Street Sweeper Social Club, the Oakland MC fires off witty, often hilarious, verbal assaults -- his self-assured flow forcing listeners to take notice. SSSC's "100 Little Curses" off the group's 2009 self-titled debut.
2. Lil Wayne
Weezy's rock move has been a disaster but there's still not a more singular voice in hip hop -- no one as wonderfully weird as this Crescent City rhyme slinger. Here's "Got Money" off Tha Carter III.