What a difference a year makes.  One the eve of the 2010 Sundance Film Festival, audiences and press were hot for two Kristen Stewart films, an opening night drama with James Franco, a freaky flick with Natalie Portman and Joseph Gordon-Levitt and Mark Ruffalo's directorial debut.  The festival ended with three films on their way toward Oscar contention, "The Kids Are All Right," "Blue Valentine" and "Winter's Bone," and a number of powerful documentaries that would make their mark throughout the year including "Restrepo," "Joan Rivers: A Piece of Work," "Waiting for 'Superman'" and "Exit Through the Gift Shop." 

2011 is a little less potent on starpower than veteran festival goers would have expected, but the Sundance programmers seem intent on making this year's selections chock full of true surprises.  With that in mind, we've picked the top 10 films we think you should pay attention to as reports and reviews file in from Park City over the next two weeks.