I just saw the suggestion that Muirenn (citing Tim Gunn) posted upthread about having a trench coat in your wardrobe. I haven't bought a lot of new items of late, but I did add two new coats. One is trench coat, the other is a wool winter coat. Both are camel colored, "car length" and tie at the waist. I adore both of them, and I think they've made me feel more jazzed about my wardrobe in general (which often feels pretty stale to me). So, don't overlook your outerwear!