big hammer. (Photo by Fern Shen) Among the costumed, there were barrel-chested, green Hulks, half-horrible Two-Faces and naughty, latex-encased Catwomen. Fur-and-metal-clad Spartan soldiers (a la 300 ) struck a pose for anyone, anywhere – girding for the Battle of Thermopylae outside the rest-rooms or beside fans munching cheese steak sandwiches. Millions