Flo didn't write anything in this thread yet. But yes, good recommendations indeed.
"L'Atalante" goes with the french poetic realism thing.
For germany you already wrote a thread about Große Freiheit Nr. 7.
Then we have "Kuhle Wampe oder: Wem gehört die Welt?" from 1932. Lot's of great workwear and a very critical message. Very left leaning and one of the first movies that got banned during the third reich. In the same vain there seems to be a movie called "Mutter Krausens Fahrt ins Glück" but I didn't see it yet.
"Berlin – Die Sinfonie der Großstadt" and "Menschen am Sonntag" are a good portrayal of the german working class too. They are not really movies about "heros" but semi-documentaries.
Edited with links
Ha! It was actually HBK not you oops... I guess we normally talk so much about those films I had thought it was you. Well I guess you, HBK and I have very similar tastes in film!