The film adaptation of the book We Need To Talk About Kevin by Lionel Shriver:
I love this book. The film, although good was way too stylised for my tastes, the red theme got irritating after a while (in all scenes, red, red everywhere, it wasn't exactly subtle), very artsy - I like artsy farsty films but I felt the film makers did this at the expense of the film. Parts of the book were cut, I don't usually mind when the time frame changes in a film but this got slightly annoying (I've already read the book so it wasn't confusing, it's written in the form of letters so I don't really mind lack of chronology)