Like Norman Rockwell's famous painting, Thanksgiving is a time we all look forward to. Whether you are American or not, the idea of sitting down to a delicious meal in the run-up to winter is a dream come true. This week, we're heading for America, with its mountains and plains as far as the eye can see, its sense of family, its autumn colours, its sprawling cities and its spirit of abundance. After preparing the turkey, of course. And what are you doing on Thursday evening?