John Travolta is in Cannes promoting his new film "Gotti," about the New York gangster John Gotti. Forty years ago, in 1978, Travolta came to the Cannes Film Festival to promote 'Grease.' The film will be screened on the beach during the festival on Wednesday to celebrate its 40th anniversary. Travolta was also at the acclaimed French Riviera film festival twenty years ago to promote another hit, "Pulp Fiction.