Good: Werner Herzog
I call foul on this. If you take the topic, your majesty, you have to come up with one thing for each. One Good. One Bad. Dems the rules.
Good: He has a unique relationship with nature that's fascinating to explore in both fiction and documentary form.
Bad: He's off too intrusive and will (*cough) unknowingly (*cough*) make himself a direct focus on the film.
(That was Herzog, not Eisner.)
So now, it's Michael Eisner.