Can food be art? Can art be food? These are fun questions to ask in the season of overeating. Maybe if we can see all that turkey and stuffing and pudding and cheese as in some way a work of art, it won't seem so gluttonous. This is what celebrity chefs offer. They show us how to be "creative" in the kitchen so we don't just feel like greedy pigs. If I can get that Heston Blumenthal recipe right, maybe my meal will possess an ethereal grace that transcends...