Rapper-turned-thesp Eminem can add a new title to his resume: comedian. The real Slim Shady poked fun at Michael Jackson on Tuesday by dangling a baby doll over a hotel balcony in Glasgow. In related news, Em has acknowledged that the $450,000 necklace he handed to a sexy concertgoer Monday in England was actually worth only $832. Somewhere, Triumph the Insult Comic Dog is thinking, "And he thinks my jokes are lame?"