The rule of thumb for a director or producer - which prevents them from just sticking their names on everything - is that you have to contribute substantially more than 50 percent of the character dialogue and story.
Harold RamisWe tell our kids that policemen are good and God protects us and our country is noble, and at a certain point - and for some it comes quite early, five or six years old - we start to realize that it's all a facade.
Harold Ramis