Art Rule #47: When delicious food is arranged in a creative and pleasing manner on a white background, that is excellent.
Actually, I made that up, but I think it holds true for a lot of good advertising design. Take, for example, this campaign for the Sydney International Food Festival. It's flags of countries, made from food! Food from THAT COUNTRY!
I think this is so cute and funny, and it makes me want to eat sushi. But what doesn't, am I right folks? Also, Scott will probably use this as an opportunity to remind me that we need to get a food photography class together.