MC Hammer is an American MC who brought rap music to a mass pop audience during the late 1980s and early 1990s, selling millions of copies of his chart topping albums. He is known for his important influence on hip hop culture and music. Following the September 11, 2001 attacks, Hammer released the patriotic album Active Duty on his own WorldHit label and donated portions of the proceeds to 9/11 charities. MC Hammer has a television show on the Trinity Broadcasting Network. Hammer is an advisor to the online video site for the dance community, Dance Jam.