Parody.

I think parody counts as fair use. I don't think you should be able to sue over it either.
It's using something existing to create something funny and entertaining. I think if we do that then we're creating a read-only culture and really stifling creativity.
I think we should be able to poke fun at various forms of entertainment and various people without fear of attack or legal suit.
If we aren't allowed to make people laugh then it's a sad world.