Getting thirsty during hour three of that cinema epic about four generations of North Dakota wheat farmers? Slide on out to the concession stand at the Chez Artiste and order up an icy Italian soda (aka "phosphate") -- sparkling water flavored with the syrup of your choice. Among the flavors: coconut, peach, hazelnut, black currant and almond. Available since March, these coolers have become hot sellers at $2.50 and represent a happy alternative to the usual colas and lemonades. Ask the clerk to add a shot of milk and -- presto! -- you've got an "egg cream."