For Ten Points, name this Florian Henckel von Donnersmarck film about the Stasi's surveillance in East Berlin, winner of the 2007 Best Foreign Language Film Oscar.
One character in this film tells a joke about the difference between a certain man and a telephone after another tells one about that man talking to the sun.  It ends with the protagonist purchasing a copy of Sonata for A Good Man, and late in this film he is demoted to steam-opening letters.  One character takes advantage of his position to rape a woman in a limousine and another character hides a (*) typewriter under the floorboards.  Christa-Maria throws herself in front of a truck after she believes she has betrayed her boyfriend, the playwright Georg Dreyman, who is being watched by Gerd Wiesler, portrayed by Ulrich Muhe.  For Ten Points, name this Florian Henckel von Donnersmarck film about the Stasi's surveillance in East Berlin, winner of the 2007 Best Foreign Language Film Oscar.
One character in this film tells a joke about the difference between a certain man and a telephone after another tells one about that man talking to the sun.  
The {Lives} of {Others} [or {Das Leben der Anderen}]