Achtung, this is a German comedy! Well, actually the movie is a lot better than what I expected (I painfully remember sitting through a few boring German comedies... Ja!).
The film's first third is very promising - unfortunately there are two other thirds which lack imagination and creativity. Especially the last third is more than lame. The movie makers obviously had used up all of their ideas before.
Til Schweiger proves to be a reliable and sympathetic actor. But he should do something about his voice. He would do himself a favor if he managed to lower it a little bit and get more melody into his way of speaking.
They say that Nora Tschirner is one of Germany's most popular young actresses. I can understand that. She delivers a convincing portrayal of an erotically retarded young woman whose seductive aura equals zero. What I didn't understand was the reason why she has to do two brief, totally superfluous nude scenes. What we get to see is really not that remarkable. At the same time, the bare chest easily destroys some of the ambiguity that Tschirner tries to put into her character.
In short: Enjoy the clever beginning, but prepare for an unsatisfying ending enriched with some clichés.