The Sundance Film Festival is a crucible for industry trends and finding emerging talent. Festival watchers tend to focus on the weak economic prospects for many of the films showcased in Park City. The independent marketplace is slowly evolving, but there was plenty to see. So what if no one film galvanized the festival the way BEASTS OF THE SOUTHERN WILD and FRUITVALE STATION did in recent years? The festival probably erred in starting off with its best offering, jazz thriller WHIPLASH. No other film topped the buzz generated by this one.