

Cast member Liv Tyler is interviewed as she arrives for the premiere of the film 'Robot and Frank' during the Sundance Film Festival in Park City, Utah, Jan. 21, 2012. Lucas Jackson/Reuters
The Egyptian Theatre is seen during the Sundance Film Festival in Park City, Utah, Jan. 19. Mario Anzuoni/Reuters
Rory Kennedy (l.), and Ethel Kennedy, from the film 'Ethel,' poses for a portrait during the Sundance Film Festival on Jan. 22, in Park City, Utah. Victoria Will/AP
Cast member Blythe Danner is interviewed as she arrives for the opening night premiere of the film 'Hello I Must Be Going' on the first day of the Sundance Film Festival in Park City, Utah, Jan. 19. Lucas Jackson/Reuters
Neil Young (l.) and Jonathan Demme from the film 'Heart of Gold,' pose for a portrait during the Sundance Film Festival on Jan. 21, in Park City, Utah. Victoria Will/AP
(L.-r.) Lynn Shelton, Mark Duplass, Emily Blunt, and Rosmarie DeWitt, from the film 'Your Sister's Sister,' pose for a portrait during the Sundance Film Festival on Jan. 21, in Park City, Utah. Victoria Will/AP
Brooke Morrison poses for a photo wearing a spectacle frame without the lenses on Main Street during the Sundance Film Festival in Park City, Utah, Jan. 22. Jim Urquhart/Reuters
Actors Rashida Jones (l.) and Elijah Wood from the film 'Celeste and Jesse Forever,' pose for a portrait during the Sundance Film Festival on Jan. 21, in Park City, Utah. Victoria Will/AP
Jacey Adams (l.) and Dan Flynn perform on Main Street during the Sundance Film Festival in Park City, Utah, Jan. 22. Jim Urquhart /Reuters
Fans pose for a photo while waiting for a performance by Drake at Bing Bar during the Sundance Film Festival in Park City, Utah, Jan. 21. Mario Anzuoni /Reuters
AnnaLynne McCord, a cast member in the film 'Excision,' poses for a portrait at the premiere of the film at the Egyptian Theatre at the Sundance Film Festival in Park City, Utah, Jan. 21. Chris Pizzello/AP
Rapper Ice-T (l.) reacts as he listens to Chuck D perform to promote the film 'The Art of Rap' during the Sundance Film Festival in Park City, Utah, Jan. 21. Lucas Jackson/Reuters
Robert Redford welcomes the audience before the opening night premiere of the documentary 'The Queen Of Versailles' to begin the Sundance Film Festival in Park City, Utah, Jan. 19, 2012. Lucas Jackson/Reuters
A general view of homes covered in snow during the Sundance Film Festival in Park City, Utah, Jan. 22. Mario Anzuoni/Reuters
Passengers exit a trolley on Main Street as snow falls during the Sundance Film Festival in Park City, Utah, Jan. 21. Danny Moloshok/AP