Sundance launched An Inconvenient Truth, Super Size Me and the career of Michael Moore. This year, at least five documentaries stand a chance of being the next conversation-changing breakout: In Fed Up, Katie Couric picks up where Morgan Spurlock left off by tracking three obese children raised on processed foods. The Case Against 8 tracks the historic fight over gay rights and California's Proposition 8. Private Violence looks at domestic violence by following one abused woman's long, legal fight for justice. The Internet's Own Boy follows the cause of pioneering online activist – some might say martyr – Aaron Swartz. But the most likely breakout hit is Ivory Tower, from Page One: Inside the New York Times director Andrew Rossi. The film attacks the explosion in college tuition and student debt – and will have a built-in audience in every college town. That is, if students can afford tickets.