Now, we have to be careful when we talk about godwin's law. While I agree with you that ben stein's expelled's connection between hitler, science, and the holocaust automatically failed his point, we have to keep in mind that not all mention of the nazis constitute an automatic loss to the debate.
Let's look at the following as an example.
A: Stalin murdered millions of people, and he was an atheist. Therefore, atheism must be bad.
B: The nazis murdered millions of people, and they were health freaks. Does that mean that being physically healthy is bad?
I would argue that B made a valid point.