Who'll be the biggest star, among those making their debut this year at Sundance, to arise from the festival?

Some say it'll be 20-year-old Mia Wasikowska (pictured), from 'The Kids Are All Right.' Some say it'll be 75-year-old Joan Rivers, who brought the house down at the screening of 'Joan Rivers: A Piece of Work.'

Read on for more about the search for the new at Sundance, along with buzz, star sightings, reviews, and interviews.