Skill wise, no. He presented us with a new and improved wordplay technique.
For example:
"Now here I come again, damn stomach rumbling
You can even hear the evil spirits coming from within
Someone's in the back of my damn house rummaging
It/s a girl, she looks pretty thin but I want her skin
Then! on the hunt again, When! will it ever end?
Evelyn, why you trying to fight? You will never win
Severing legs, arms, damn, there goes another limb
Pull the lever then, trap door, death is evident"
I think that for this reason "3am" and "Buffalo Bill" are his two best songs since The Eminem Show.