Eminem was a lady friend of Snoop Dogg's who underwent a sex change prior to his rap career
Mockingbird is the bridge between "Kim" and "'97 Bonnie and Clyde".
Eminem is the Reincarnation of Doc Holliday.He's vulgar to those he feels deserved it. Despite his upbringing, he is well educated and has a great vocabulary. To top it off he is insanely loyal to his loved ones and friends.
Stan didn't die.That last scene in the music video was really him and not a Hallucination. He simply bailed out before the car went over the bridge.
Alternately, "Stan" and "Bad Guy" were Stan's nightmares.And they were his punishment for drugging and possibly raping the girl in "Guilty Conscience".
"Stan" is actually a conversation between Slim Shady and Marshall Mathers.The part where Stan kills himself and his girlfriend could represent Eminem killing Kim and then himself, probably because of his drug addiction.
Slim Shady is HABITSeriously, it's all there! Split personality? Check. Twisted sense of humor? Check. Violent and vulgar as all get-out? Check, and mate.