I don't get a chance to fly Northwest very often, but I did a few months ago, and I flew a 1.5 hour flight, in First Class, and I was shocked when we were served a hot meal on such a short flight (delicious too). It was a nice experience.
I love NW. My trips are usually DCA-SEA. When I fly DCA-MSP-SEA and SEA-MSP-DCA, I usually get two meals in both directions since both legs have meals. On US, I don't think either would have a meal.