Calorie King - useful website
I checked the archives, and it doesn't look like anyone's mentioned this for almost a year--so I thought I'd post it. It's been very useful to me, especially to find calories for foods from fast-food places and restaurants. Here is a link to the main page for that section. Go down to the menu box that says "choose a brand", click on the little drop-down arrow next to "average all brands" and you'll get a humongous list of restaurants to check! Just scroll to the one you want, and click on Go.
(Did you know if you ate a whole blooming onion at Outback Steakhouse it's over 1000 calories?)
The main listing for each restaurant gives calories for each item, but if you click on the menu item name (in blue) you'll link to more complete nutrition info, including carb and fat grams.
Here is a link that might be useful: Calorie King - Fast Food/Restaurant section