So there's this episode of the Simpson's where the Comic Book Guy points to a very rare picture of Sean Connery signed by Roger Moore. Obviously it's a joke, but it got me thinking if anyone here has tried getting a famous gimmick autograph, or knows of any that exist. I'm not just talking about actors signing as their characters, I mean celebrities that sign pictures not of themselves, as a joke. Like if Larry Bird signed a picture of Magic Johnson or something like that.

Alternatively, has anyone got a particularly funny or non-sequitor note with their autograph? I can imagine some comedian signing "Don't write to me again. Your enemy, ____"