Hubert Selby Jr: It/ll Be Better Tomorrow
Starring Hubert Selby Jr., Darren Aronofsky, Arthur Boyars, Anthony Di Novi, Carmine 'Tony' DeFeo, Robert Downey Jr., Alexis Arquette, Ellen Burstyn, Amiri Baraka
It's a biography and documentary movie, and has a rating of 7.4 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Germany.