I love Berlin and I love this Berlin movie! It has a very fresh story partly surreal and describes a young couple and a murder mystery in Berlin at the new millennium. I read on wikipedia the film was partly shot like a documentary -even partly with hidden camera. Thats make this piece very special. And this is why the movie is so exciting from today's perspective (more than a decade after). A fiction but somehow a doc too about a period that no longer exists in the rapidly changing Berlin.
But the best is the awesome nightclub scene! Unbelievable! I didn't see a similar amorous plot point in any movie before. And if you like Michelangelo Antonioni's Blowup you will find a lot of mash up scenes in it.
Highly recommended.