Copyright infringement question

[aef34]

> bboyminn:
> Now I suspect if you use a product name, say McDonald's, in
> a way that defames the company or is slanderous, then they
> might have a case against you, but not for copyright or
> trademark infringement. A recent book which was also 
> made into a movie, though I don't recall the name, in which,
> under the supervison of a doctor, a man tried to eat nothing 
> but McDonald's for 30 days. His health became so bad that
> the doctors forces him to stop before he reached the end
> of the 30 days.

Supersize Me was the name of the movie.  I think he did complete the 30 
days against doctors wishes.