Well, it’s not exactly an expat movie, although various characters do travel to and stay in other countries. But it’s a sweet Christmas-time romantic comedy, so I thought it worthy of a review at this sentimental time of year. It also features an unusual character – the Home Exchange website, a great place to arrange for low-cost living arrangements in another country. The film was written and Directed by Nancy Meyers, and stars Cameron Diaz, Kate Winslet, Jack Black and Jude Law. It's about …