Since I don't own very many vegan cookbooks, I find a lot of recipes online. Here are a few of my favorite sources for vegan recipes:
Oh She Glows
Angela Liddon's extensive blog is full of creative, healthy vegan recipes, complete with beautiful photos.
Post Punk Kitchen
Created by Isa Chandra Moskowitz, the co-author of Veganomicon and several other vegan cookbooks, this is a really well-organized website with vegan recipes for every meal and occasion.
So maybe they are a little crazy... but PETA offers a great search engine for vegan and vegetarian recipes. Plus, they have a helpful "Vegan Baking Cheat Sheet" that tells you how to substitute for eggs and dairy in non-vegan baking recipes.