CANNES, France--The Affair of the Brown Bunny, one of the most astonishing episodes in the history of the Cannes Film Festival, took another turn Friday when director Vincent Gallo apologized for his film and said, "It is a disaster and a waste of time." Gallo's "Brown Bunny," which screened as one of three American entries in the official competition, was the lowest-rated film in the history of Screen International, the British trade paper that tabulates votes of a panel of critics. It was booed and laughed at during its screenings, there were countless walkouts, and its inclusion as an official...