Like PB&J or gin and vermouth, few marriages are more sublime than a bowl of firm macaroni and a variety of gooey cheeses. If you, too, love a cheesy mac attack, you'll enjoy reading this Gapers Block account of last week's sMACkdown benefit at Goose Island in Lake View, featuring local chefs trying to make the aged-old dish their own. Some interesting combinations. Oxtail? Seriously?