May 16Lately, it's been hard for dictators. Saddam Hussein, Muammar Gaddafi and Kim Jong-il all had their reigns come to abrupt and permanent ends. Even Fidel Castro barely animates a sense of menace anymore. So into the role of global bad boy steps Admiral General Aladeen, from the nation of Wadiya. Working again with director Larry Charles (Borat, Bruno), Sacha Baron Cohen is on a mission to exceed low expectations of some obvious and crass jokes, this time with the tarnished brand of overblown tyrants. But who could better deliver gaudy and smug excess than Cohen? PAGE 40.