The Bang Group returns for the 17th season of its delightfully offbeat "Nut/Cracked," performed by an ensemble of 19 dancers with guests.   David Parker's neo-vaudeville version of "The Nutcracker" features a totally unpredictable array of dance forms inspired by competition, intoxication, greed, Chinese take-out, bubble wrap, toe shoes, and the perils of ice.  A holiday charmer for audiences of all ages.