I've been to a few county fairs across the country and I'm actually quite proud of our OC fair =) There is actually a good amount of home-town fair feel left to it like the really nice clean animal barns / petting zoo and food-crop gardens. There's the veggie growing competitions and pie and cake baking competitions and sewing and quilting ect. But then of course you have the hip so cal stuff too like the ice sculpture museum, art exhibits and pottery and glass blowing. And yes the fried everything is popular but there are actually more healthy choices there than most fairs - chicken fajitas for example are so yummy and low carb!
link to oc fair website: http://ocfair.com/2012/index.asp