I don't throw many (or any, really) formal dinner parties, but I still found this diagram helpful, if for no other reason than it illuminates Downton Abbey's dining etiquette.
All joking aside, seeing this diagram reminded me of a few table-setting rules I learned from my mother as a child: the knife blade always faces towards the plate; the coffee spoon lies horizontally above it; and the water goblet sits in the upper righthand corner above and angled to the (smaller) wine glass.
This probably isn't a daily set-up for you — if it is, I'd like to call on you at dinnertime, please! — but definitely worth knowing, if only in parts, for more formal occasions, like weddings and fancy business dinners.
(Image: Tasty Design via One Hungry Mama)