well, quite a few of us in the states have something to do with Germany, many don't even know it :-)
There is even a german-american heritage month!
National German Heritage Month (Celebrated from September 15 to October 15)
A month celebrating America's German heritage. Numerous historical programs, museum and library exhibits, cultural events, genealogical workshops and more planned.
Besides the german-american day that is:
en.wikipedia.org/wiki/German-American_Day
en.wikipedia.org/wiki/List_of_famous_German_Americans