Harcos Zombie Products
Big fan of the Zombie Blood and Zombie Jerky by Harcos. Used to buy these quite a bit on ThinkGeek - but they are either out of stock or not selling anymore. I actually found that the manufacturer (Harcos) has their own online store and sell them at a better price. I have found that quite a bit with ThinkGeek ... but for overall selection they have it all in one place! Just don't get too comfortable with a particular product as they seem to pull them off their site regularly.