Hi Pemmican,
I'll be happy to share my own opinions and prejudices about Germans, though I, an American, have only met one German in my whole life. He was a German expatriate who worked with me, and he shared with me his opinions and prejudices about the French (he said they had poor hygiene). I asked him what the French would criticize about the Germans, and he said that they would say that Germans have no "joie de vivre".
And I think that anecdote dove-tails into my own opinion of Germans for what little I know about them: among Europeans, Germans match most closely the work ethic and inventiveness of Americans, surpassing it in some areas. When my father told me about World War II, he always spoke ill of the Japanese, not of the Germans. To him, I think the Germans were "like Americans" whereas the Japanese were "different". I separate Nazis from Germans. I think that Germans carry lots of self-destrutive guilt for what happened during World War II. I read on the English version of der Spiegel that patriotism in Germany is taboo.
I think German cuisine is mostly uninteresting. It seems like all of it is "spatzle and sausage". Maybe this is just my lack of exposure to it.
I think Germany is probably one of the most beautiful countries I've ever seen photographed. I've never been there before, but I've seen "The Great Escape" which was shot there. I think that Germany has the most Christmasy and magical Christmas.
I think it's unjust that the former Stasi officials aren't rotting in jail for the rest of their lives.
My sister, who lives in the UK, thinks that Germans are generally stoic and stiff. Apparently, that's a common opinion among her circle of (mostly English) acquaintances.
Most importantly, I treat would treat every German as an individual, not as an individual German. And I suppose that's very American of me.