I weigh almost everything after cooking, but I have a calorie guide that lists both cooked and uncooked calories-it's just very important to know which you're looking at in your guide. As far as pastas and noodles, since I have to cook large pots for the whole family, it's just impractical to measure out one dry serving for me and cook it separately, but my guide states that any type of noodles, spaghetti, etc, has 37 to 38 calories per ounce cooked to medium texture or 32 cal/oz if cooked very tender (more water in the noodles). So, I just weigh mine out when I'm filling my plate.
The only time I use calories for raw meat or uncooked noodles is when I'm figuring cals for a recipe and then I have to divide it up by serving or cup of the finished (cooked) food.
The CalorieKing guide lists both cooked and uncooked info for most foods we use at our home.
7/18/12 became wheat- and dairy-free @ 235 pounds