Yasiin Bey, formerly known as Mos Def (born Dante Smith), rapper, actor, & member of Black Star. He was a major force in late 1990s underground hip hop music, expanding in the 2000s into movies. His songs include Body Rock, Ms. Fat Booty, Jam on It, Brown Sugar & Ghetto Rock. As an actor, he appeared in Cadillac Records, 16 Blocks, Something the Lord Made, Monster's Ball, The Hitchhiker's Guide, & The Italian Job. The Source ranked him #23 on its list of the Top 50 Lyricists of All Time .