Today is the birthday of record producer, actor , songwriter and rap superstar Marshal Bruce Mathers better known by his stage name Eminem and by his alter ego Slim shady. He was born forty years ago on October 17, 1972 . Eminem is the best selling artist of the 2000's and has officially sold more than 90 million records making him to be one of the best selling artists in the world .He's won lots of awards abd made lots of records in the music industry.