It is a clear example of how much Lopez has engineered control. Actresses, particularly those with such slender experience, do not get to choose a director; it's usually the other way around. And few would volunteer for an unknown first-time director on anything. But she flouts convention. At a point two years ago when she had been in a succession of bad or indifferent movies such as Jack, with Robin Williams, or Blood And Wine, with Jack Nicholson, she launched a pointed attack on fellow stars. Gwyneth Paltrow? 'Tell me what she's been in,' she said. 'I swear to God, I don't remember.' Winona Ryder? 'I was never a big fan of hers. In Hollywood, she's revered, but I have never heard anyone in public or among my friends say, "Oh, I love her."' Madonna? 'Do I think she's a great performer? Yes. Do I think she's a great actress? No.'