Brunch has become many Americans’ favorite way to fill a weekend day with special people. Whether you’re a late sleeper or an avid early morning jogger, whether you’ve traveled to church or just out to get the great thick Sunday paper, whether you’re in the mood for a football game or chamber music, brunch is just the thing for that unstructured day called Sunday. (And we think Saturdays are deserving of some special treatment, too.) Brunch can be for any number, but make it light, informal, and pretty. A buffet allows people to come and go comfortably as they please, indoors or out. For two or