Adam Keefe Horovitz, popularly known as Ad-Rock, is an American rapper, guitarist, and actor. He was a member of the hip-hop group Beastie Boys. While Beastie Boys were active, Horovitz performed with a side project, BS 2000. From Wikipedia
The 25-year-old indie distributor adopts a new name, logo, and structure to unify AMC Networks' film operations while maintaining its legacy assets.
