PARK CITY, Utah -- Actors are directing. Singers are acting. Drama directors are making concert films. Former presidential rivals Al Gore and Ralph Nader are hitting the big screen.
And Hollywood's much-maligned system of rating movies stars in its own film.
The Sundance Film Festival, the country's foremost showcase for independent cinema, gets under way Thursday with an intriguing mix of role reversals among its cast.
Gore and Nader lead what's shaping up as a powerhouse year for documentaries, always a strong suit at Sundance. Director Davis Guggenheim's "An Inconvenient Truth" chronicles former Vice President Gore's dogged campaign to convince a reluctant society of fossil-fuel profiteers and consumers about the dangers of global warming.
Nader, viewed by critics as the spoiler whose campaign kept Gore out of the White House in the 2000 election, is the subject of Henriette Mantel and Stephen Skrovan's "An Unreasonable Man," a portrait of the crusader for consumer rights and safety.