Have you visited some Indiekinos in Berlin? They are worth visiting because of their atmosphere and of course because of the movies which are shown there. I found for you a nice list and map about Indiekinos in Berlin.
During the years I have visited many of them and if I remember right they show movies in original version (with subtitles). But check it before going there...Anyway for me this is an important factor when being in cinema, up to the point than the cinema has kind of old-fashioned-movie-atmosphere...
Berlin is also one of those cities where you can find very interesting Street Art all around the city.
Here for you info about Urban Art in Berlin. Believe me, it is worth studying...
Have you already visited Museum Urban Nation in Berlin? Me yes now. Yes it is worth visiting and you do no pay anything!
Up to that some photos from Oranienstrasse and Bülowstrasse, as well as from the Friedrichshein neighbourhood and in the Subway. Do not forget Rosenthaler Strasse and Schönhauser Allee/Alte Schönhauser Strasse neither...
Couple of years ago we had here in Helsinki Buddy Bears on the Senate Square. I am sure you have seen those bears in Berlin too...
