At a time when many want to hunker down indoors, NYC makes it hard to stay at home. There’s seasonal fun like George Balanchine’s The Nutcracker, The Radio City Christmas Spectacular and the City’s holiday markets. There are exciting sounds at Make Music Winter and Winter Jazzfest. The New York Jewish Film Festival, the Armory Show and the St. Patrick’s Day Parade return as perennial favorites, while exhibits highlighting Jackson Pollock’s abstractions and the works of Lord of the Rings author J. R. R. Tolkien are brand new. For details on these and many other events, read on.