Overall, I love Eminem, have been since the start. I loved rap music before him anyway. If he was black, I'd still love him, because his blunt lyrics, sharp delivery and verbal energy (most of the time), is a humorous and striking listen although most of the time he has made fun of himself being white; "Some people see I'm white, ignoring skill."
The Slim Shady LP - I absolute adore. Fiery and humorous.
The Marshall Mathers LP - My favourite of his famous "Triptych". Just brilliant, and compelling.
The Eminem Show - A great retrospective approach at his fame.
Encore - My least favourite of his new trilogy. Trying to be funny, but it just doesn't work. Some of it still stands out.
Relapse - A good return, but still falls cringe-worthy in the same style as Encore.
Recovery - A nice, almost fresh take on the new "rap game". A bit contradictory, but it explains his recent hash of things.
EDIT: Oh, and in another post I say I don't like modern rap music. This is an exception. 