Over 500... Give or take (maybe around 750? I need to count!). Perhaps I should be ashamed, but I am not! I organize them by obvious theme; asian, pastry, candy making, sauces, barbecue etc... I find myself needing to get creative with some of the categories, such as "chefs who deserve to be famous" and "chefs who don't deserve [it as much] to be famous". The collection is steadily growing and some of the favorites that stand out at this moment are a very complete selection of Keller's books, Modernist Cuisine at Home, and more. I make sure to pick up local books from anywhere I travel to, with everything from Medeival cooking of Scotland (no, I have not made anything from this cookbook) to Viennese specialties, Lemon themed cookbooks from the Amalfi coast, and even Ancient Peruvian. I dream of having a library room one day, and at this rate...