That is the "german" title of the movie, which sees Cusack as a lovable bad guy. And while he is doing some despicable things, he also acts in a way that makes the audience care for him. Just the fact that it is Cusack playing that guy/character gives him some points in that direction. Only Paul Rudd might have had a more positive resonance from the audience (and it would have been fun to see him in a role like this).
The twists and turns of the movie are more or less predictable, but the movie is really nicely done. There is also a scene (a "clash" of some sorts, that you know is coming), with some really intense and good dialog (especially De Niros delivery). The rest is OK, with a leading lady that would bewitch almost any (straight) male.
