Funny that so much discussion has taken place already and nobody has posted any lyrics or any links to them. Well, here are two:
Eminem Song Lyrics Source: New Eminem Lyrics
eminem lyrics

Here's the song called "Stan," which eminem and Elton John performed at the Grammys last night. I believe Elton sang the chorus, the lyrics of which are given in italics here, and eminem did the rest.

Here's the other site's transcription of "Stan"