Don't call it a comeback. Marshall Mathers has been here for 10 solid years. "Relapse," Eminem's 2009's effort, marked his fifth consecutive No. 1 album on the Billboard 200 -- in other words, every album he released this decade went straight to the top of the charts. "Me and Dre are back in the lab like the old days," Eminem said of the set in 2008. "I don't have chemistry like that with any (other) producer, not even close. We are up to our old mischievous ways." Though many of his early-decade contemporaries have been all but forgotten by the masses, everything Eminem touches still turns to platinum.