You may not realize it or even care but East Germany is so marginalized, both within Germany itself and within history. The way Americans understand it is the wall came down, happily ever after. The way most Germans understood it when I was there depended on what side of the scar of the wall you were on.
German film is marginalized to begin with. Even within Germany few people (that I met, anyway) had heard of Herzog, Fassbinder, etc. DEFA - that's East German state studio - film is even more marginalized. Stautde, Wolf, Carow, the names only serious Germanists or Eurocentric film scholars know.
So I was delighted that this book, edited by Sean Allen (whose name has an accent I'm too lazy to reproduced, apologies!) and John Sandford, like, totally exists. I got it because my friend's neighbor in Brooklyn threw it out. Seriously.
Defa: East German Cinema, 1946-1992
The book is not without flaws, but if you want to act like you know anything about DEFA film at cocktail parties, it is definitely Recommended. Therefore, it is today's recommendation.