When I lived back in California I went to the Granddaddy of all garlic festivals a couple of times, The Gilroy Garlic Festival. They get over 100,000 people for the weekend. I remember an earlier post of yours and am kind of referencing it here. At the Gilroy festival, they make a garlic ice cream that is delicious.

http://americanfood.about.com/od/extremeamericancuisine/r/garlicic.htm