Robert Olsen, Dan Berk, Gavin McInnes, Chad Harbold and Bryan Gaynor attend the Shorts Program II during the 2009 Sundance Film Festival at Racquet Club Theatre on January 16 in Park City, Utah.

Rosie O’Donnell and Oprah Winfrey attend the Oprah Winfrey Network Hosted Documentary Event at the Sundance House during the 2011 Sundance Film Festival on January 22, 2011 in Park City, Utah.

Photographer Henny Garfunkel poses for a photograph on Main Street in Park City, Utah, before the start of the Sundance Film Festival on Wednesday, Jan. 16, 2013. Garfunkel has been photographing film festivals since 1993. Kristin Murphy for The New York Times

Liz Coffey, a Hilltop Productions revisor, prepares films for the Sundance Film Festival.

Joseph Gordon-Levitt attends Shorts Program IV during the 2009 Sundance Film Festival at the Racquet Club Theatre on January 16 in Park City, Utah.

Billy Morrison, of The Cult and Circus Diablo, performs with Camp Freddy at Harry O's in Park City during the Sundance Film Festival on Monday January 19, 2009.

Fans and photographers swarm Adrian Grenier as he gets in a car on Main Street during the Sundance Film Festival.

Fans and photographers swarm Matthew Perry as he leaves The Lift tent on Main Street during the Sundance Film Festival.

Editor-in-chief of American Vogue Anna Wintour attends the Park City premiere of 'The September Issue' during the 2009 Sundance Film Festival at Temple Theatre on January 17, 2009 in Park City, Utah.

Television journalist Katie Couric attends the 'Fed Up' premiere at The Marc Theatre during the 2014 Sundance Film Festival on January 19, 2014 in Park City, Utah.

Andy Munitz raises his arms and watches a digital reflection of himself form as part of Daniel Rozin's interactive artwork in the New Frontier during the Sundance Film Festival.

Actress Gitte Witt attends the Sleepwalker premier at the Library Theater in Park City for the Sundance Film Festival on Monday, Jan. 20, 2014.

Colt Kranig, 17, of Kamas, plays guitar on the sidewalk of Main Street in Park City during the Sundance Film Festival.

Sister Rose Pacatte looks at movie posters before posing for a portrait on Main Street in Park City, Utah, during the Sundance Film Festival on Wednesday, Jan. 23, 2013. Kristin Murphy for The New York Times

David Nash tubes at The Village at The Yard during the Sundance Film Festival.

Kristen Petrie, Cathy Boruch, and Katie Connolly overhear a radio call that they might be let into the premier. After being told that all seats were gone and they would have to wait in line for the next showing, 10 more seats became available.

Robert Redford, founder and president of the Sundance Institute, talks to the media at the opening press conference of the 2014 Sundance Film Festival at the Egyptian Theatre in Park City on Thursday, Jan. 16, 2014.

To be Takei premier at the Yarrow in Park City for the Sundance Film Festival on Saturday, Jan. 18, 2014.

Sundance Film Festival Volunteer Mya Drexler checks the timetable at the Sundance Box Office in Park City, Utah.

Helen Worthington, of Jeremy Ranch, shops for mugs at the Gateway Festival Store during the Sundance Film Festival in Park City, Utah.

Projectionist Frank Baird poses for a photograph in the Prospector Square Theatre projection room as Sergio is being shown during the Sundance Film Festival on Friday January 23, 2009.

Guests enjoy cocktails at The Village at The Yard during the Sundance Film Festival.

Actress Anne Heche attends the 'That's What She Said' premiere held at Prospector Square during the 2012 Sundance Film Festival on January 20, 2012 in Park City, Utah.

New Frontier at the Sundance Film Festival.

Slamdance vs. Sundance sled-off at Park City Mountain Resort in Park City, Utah.

Liz Coffey, a Hilltop Productions revisor, prepares films for the Sundance Film Festival.

Mitt Romney, with his wife Ann Romney and their granddaughter Allie Romney, talks to reporters at the Sundance Film Festival premiere of Mitt at the Rose Wagner Theatre in Salt Lake City on Friday, Jan. 17, 2014.

Jason Schwartzman and Krysten Ritter attend the 'Listen Up Philip' Premiere during the 2014 Sundance Film Festival at Library Center Theater on January 20, 2014 in Park City, Utah.

Actor Christopher Abbott attends 'The Sleepwalker' Premiere during the 2014 Sundance Film Festival at Library Center Theater on January 20, 2014 in Park City, Utah.

Robert Redford, founder and president of the Sundance Institute, talks to the media at the opening press conference of the Sundance Film Festival at the Egyptian Theatre in Park City, Utah.

Liz Coffey, a Hilltop Productions revisor, prepares films for the Sundance Film Festival.

Kate Rogal and Johnathan Tchaikovsky attend the 'Concussion' premiere at Library Center Theater during the 2013 Sundance Film Festival on January 19, 2013 in Park City, Utah.

Actor Ken Marino attends the 'In a World' premiere at the Library Center Theater during the 2013 Sundance Film Festival on January 20, 2013 in Park City, Utah.

Actress/Writer/Director Lake Bell rehearses her speech for the 'In a World' premiere at the Library Center Theater during the 2013 Sundance Film Festival on January 20, 2013 in Park City, Utah.

Mark Duplass and Elisabeth Moss attend 'The One I Love' premiere at the Marc Theater in Park City for the Sundance Film Festival on Tuesday, Jan. 21, 2014.

Television journalist Katie Couric attends the 'Fed Up' premiere at The Marc Theatre during the 2014 Sundance Film Festival on January 19, 2014 in Park City, Utah.

John Rzeznik, of the Goo Goo Dolls, performs at the Music Cafe during the Sundance Film Festival in Park city on Monday January 19, 2009.