According to the London tube press (see picture) and some more serious journalistic organs, one of the funniest British comedy series, 'Allo 'Allo, is supposed to be aired in Germany -- finally.
It is set in Nazi-occupied France, was released in 1982 and went on for 10 years making fun of the British, the French and--of course--"ze Germans".
Apparently there are some doubts if the German viewers think it's funny--I for my part think it's hilarious and I know that Germans usually enjoy the representation of Germans and Germany in foreign fictional media...
Two other great examples: Herr meets Hare, a cartoon from 1945 in which Bugs Bunny meets some Nazis in the Black Forest (link to the video), and the classic of Charlie Chaplin as The Great Dictator Hynkel (whole movie and a cool snippet).
By the way, I was surprised to recognize René as the doorman in Terry Gilliam's Brazil the other day.