Good Bye, Lenin! (2003)
Good Bye, Lenin! is a 2003 German tragicomedy film. Directed by Wolfgang Becker, the cast includes Daniel Brühl, Katrin Saß, Chulpan Khamatova, and Maria Simon. Most scenes were shot at the Karl-Marx-Allee in Berlin and around Plattenbauten near Alexanderplatz.
More at Wikipedia.