French Cuisine (other than JC):
Patricia Wells - Bistro Cooking, At Home in Provence
Paula Wolfert - The Cooking of Southwest France (if you love ducks, that's the book for you)
Elizabeth David - French Provincial Cooking
I've also heard great things about Dorie Greenspan's recent Around My French Table, although reviewers note that as a contemporary French cooking has a lot of influences from around the globe (Asia, North Africa and even USA). However, if you'd like to find out what French people are likely too cook at home these days, this has to be a great resource.
Spanish Cuisine
Penelopa Casas - The Foods and Wines of Spain, Tapas
Portuguese
Jean Anderson - The Food of Portugal
Italian
Marcella Hazan - The Essentials of Classic Italian Cooking
Mexican
Rick Bayless - Authentic Mexican, Mexico One Plate At a Time
Russian
Anya von Bremzen - Please to the Table: The Russian Cookbook
German
Mimi Sheraton - The German Cookbook: A Complete Guide to Mastering Authentic German Cooking
Japanese
Shizuo Tsuji - Japanese Cooking: A Simple Art
Chinese
Irene Kuo - The Key To Chinese Cooking
Barbara Tropp - The Modern Art of Chinese Cooking
Thai
David Thompson - Thai Food
Indian
Julie Sani - Classic Indian Cooking, Classic Indian Vegetarian and Grains Cooking
Madhur Jaffrey - Indian Cooking, An Invitation to Indian Cooking, A Taste of India
Middle-Eastern
Claudia Roden - The New Book of Middle Eastern Food
Greek
Susanna Hoffman - The Olive and the Caper: Adventures in Greek Cooking
Diane Kochilas - The Food and Wine of Greece
South American
Filipe Rojas-Lombardi - The Art of South-American Cooking
Copeland Marks - False Tongues and Sunday Bread
Elisabeth L. Ortiz - A Taste of Latin America