Art documentary 'Exit Through the Gift Shop' open to interpretation

EXIT THROUGH THE GIFT SHOP — ★★★1/2 — Documentary feature profiling "street artists," narrated by Rhys Ifans; rated R (profanity); Broadway Centre

The brilliantly untrustworthy documentary "Exit Through the Gift Shop" reminds us that a film can start out in one direction and then change course so radically, it becomes an act of provocation unto itself.

It's billed as the first feature by the shadowy British street artist known as Banksy, who appears on-screen in literal shadows and a hoodie, with a digitally scrambled voice. (His kind of graffiti and urban commentary exists, as he says, in "a bit of a legal gray area.") The movie — or rather a different, unfinished movie — starts out as a documentary chronicling street artists in action. The man behind the camera: Thierry Guetta, a mutton-chopped Frenchman with a fashionable clothing store in Los Angeles and an insatiable voyeuristic streak.

Guetta is a compulsive videographer, filming his family life, his work life, his recreational life almost perpetually. He becomes obsessed with street artists and their below-the-radar yet highly visible endeavors, all around the world. He is both their Boswell and their stalker, filming, filming, filming, always.

Then the holy grail of reclusive street artists arrives in L.A.: the British provocateur Banksy, readying a solo show. Guetta is eager to film this superstar in action to complete his collage portrait of what narrator Rhys Ifans describes as "the biggest countercultural movement since punk." By this time, Guetta has amassed hundreds, perhaps thousands of hours of unedited footage he keeps in unlabeled boxes. A first-draft version of Guetta's documentary, titled "Life Remote Control," turns out to be a trippy mess.

According to "Exit Through the Gift Shop," Banksy took over, casually suggesting to Guetta that he try pursuing an art career of his own, more or less to get rid of him. Banksy and his associates then began making a movie about Guetta's pipe dream of becoming an artist.