Trivia: While the film is primarily written by "Scream" and "Scream 2" writer Kevin Williamson, due to a hectic production schedule, "Scream 3" writer Ehren Kruger was brought on to do some last-minute rewrites during filming. However, Kruger chose to go uncredited, as he mainly worked on "polishing up" scenes originally written by Williamson.
Trivia: 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.
Trivia: Shortly after Hugo drops a piece of metal from the suspending clock to the ground of the train station, the Station Inspector, assuming that Claude dropped it, loudly asks him if he is 'drunk, inebriated, shikker, etc.' The work shikker is from the Hebrew word shikkor for 'drunk'. Shikker actually means drunkard.Allister Cooper, 2011