Whole Foods has a great selection of organic produce, health foods, vegan hygenic products, vitamins and supplements, and basically answers all your vegan needs. Their salad bar, hot food island, and deli all feature specially marked vegan prepared items usually made without added oil. Their vegan baked goods are lacking, however, as they do not have a good selection. Their bulk section also could be expanded.
All in all, Whole Foods is a great one-stop shop for everything vegan. However, I wish I could like the store more, but since it is a chain and does not often feature local produce, I reserve the title of my favorite grocery store for the Willy Street Co-op.
See pictures and more restaurant reviews at my blog: http://farmersmarketvegan.wordpress.com/