Leaping back into action, gun-slinging, guitar-toting hero "El Mariachi" is back in town in ONCE UPON A TIME IN MEXICO, as director Robert Rodriguez delivers the epic final chapter of his pulp Western trilogy. Starring Antonio Banderas, Salma Hayek, Johnny Depp, Mickey Rourke, Eva Mendes, Enrique Iglesias and Willem Dafoe ONCE UPON A TIME IN MEXICO is a full-frontal assault.