Dr. Martin Harris: Do you know what it feels like to become insane? It's a war between being told who you are and knowing who you are... Which do you think wins?
Throughout the movie if you look in the background at the various graffiti tags, one in particular stands out. Look for the tag OZ. In almost every scene that has graffiti on the walls you 'll see it somewhere in the background, sometimes more than once. Although it is common for graffiti artists to leave multiple marks in multiple areas, Berlin is a big city and it can be spotted too often for it to be coincidence. See more...
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The "questions" section is for any random questions that occurred to you while watching this film, or anything you didn't entirely understand, and which Google or the IMDb can't help with. Submit them as a question, and hopefully someone will answer (the bold comments in brackets) - check back regularly. If the answer is wrong, or missing information, please use the "clarify answer" option. Don't feel limited - want to know what music played in a certain scene? Whether this was the first film to use a certain effect? Here's the place to ask!
Question: What (if any) is the significance of the "OZ" graffiti that pops up throughout the film? It became quite distracting as I thought it would pay off at the end of the film.
Answer: The 'OZ' sprayer is a very disturbed man who claims to be an artist but the courts think otherwise. You can found his OZ (which he claims to be read OLI!) everywhere in Berlin and Hamburg. It has absolutely nothing to do with the movie but you can't film a wide open scene in Berlin without taping it.
Question: Why do they simply kill dozens of people in the movie, but with him it has to be something long and drawn out, like poison in the hospital or drugs in the parking garage?
Answer: Common movie, and literary, trope. The hero can never be taken down by a simple bullet in the back, otherwise there'd be no suspense, no story. It doesn't make sense, but it's more exciting this way.