Eminem has a style all his own.  A big part of being a rapper is having your own flow.  While many people bite different parts of different songs, imagine other artist using their own flow to cover specific songs.  Youtuber, 10 Second Songs, does just that as he mimics 40 different artist to cover "Rap God."  He ranges from hip hop greats, to rock favorites, and even some obscure pop artists. 

I have his videos before and they all are impressive.  Now you be the judge of how spot on he is.