If you haven't seen it, I suspect Conspiracy would be right up your street.
It's a dramatisation of the Wannsee conference, a bureaucratic meeting in pleasant surroundings where some high-ranking German officials are calmly and inexorably guided to the notion that the logical course of action is, well, The Final Solution.
It's *horrible*. And yet so *banal*.
This is an excellent recommendation. I second it.