my type of question!
you can use sage in so many things.
i use it on chicken, on fish such as tilapia or cod, in many soups (especially chicken noodle and tomato or in beef broth), in pork and chicken gravy, on lamb chops, in tomato sauces and tomato-based dishes, on buttered carrots, even on broiled ribeyes. sage enhances so many savory dishes. i use it almost as often as i use salt and pepper.
i almost always use ground sage.