Help, I am dating a vegetarian!
My personal favorite vegetarian cookbook of all time is Passionate Vegetarian by Crescent Dragonwagon. Her recipes can be time-consuming, but the book is wonderfully expansive and full of a lifetime of experience cooking vegetarian (and tips for people who have never seen amaranth or mustard greens before).
As for online stuff, some of my favorites:
http://consciouskitchen.blogspot.com/
http://letsgetsconed.blogspot.com/
http://www.urbanhonking.com/hotknives/
http://www.veganyumyum.com/
http://veganfeastkitchen.blogspot.com/

Website: http://sloshed.hyperkinetic.org
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Favorite foods: chana masala, heirloom tomatoes, bahn mi, peaches
Last bite on earth: