I love South Beach and have been eating this way for years now.
I have two of their cookbooks. The South Beach Quick and Easy (yellow) and an Orange one. Every recipe in those are terrific. There is one I use almost weekly (Baked Pesto Chicken) and I only ever make their Caesar Salad. They also have a very good eggplant and ricotta pasta dish.
You can find them for super cheap at half.com. Here are the links:
http://product.half.ebay.com/The-South-Beach-Diet-Quick-and-Easy-Cookbook-200-Delicious-Recipes-Ready-in-30-Minutes-or-Less-by-Arthur-Agatston-2005-Hardcover/46605253&tg=info
http://product.half.ebay.com/The-South-Beach-Diet-Cookbook-More-than-200-Delicious-Recipies-That-Fit-the-Nations-Top-Diet-by-Arthur-Agatston-2004-Hardcover-Revised/5985995&tg=info