I have three, three-shelf bookshelves in my dinette area (former kitchen before the addition).
Top Left: Ethnic, mostly grouped by category
Middle Left: Grilling, BBQ, etc.
Bottom Left: Miscellany (came with appliances, local cookbooks, etc.)
Top Middle: Party foods, appetizers and the like
Middle Middle: Everyday cookbooks (Joy of Cooking, Gourmet, America's Test Kitchen, etc.)
Bottom Middle: Celebrity Chefs and Famous Restaurants (the Frugal Gourmet, Mario Battali, French Laundry, Alinea, etc., althought 2 Bayless books are on the top left)
Top and Middle Right: Baking (breads, cakes, cookies, etc.)
Bottom Right: Borders' series cookbooks
Books do tend to migrate, especially on the middle bookshelf -- that and the top left is what gets the most action.
What is patriotism, but the love of good things we ate in our childhood?
-- Lin Yutang