Marshall Mathers, better known by his alter-egos Eminem and Slim Shady, is a rapper, record producer and actor who has sold over 75 million albums worldwide. His ‘Mashall Mathers LP’ still holds the record for the fastest selling hip-hop album in history. Eminem released his new studio album ‘Relapse’ in 2009, after a four year hiatus and has hinted that it may not be the only new album he will release this year.