MSN has recently posted an exclusive clip for Superman Returns that features the most dialogue we have seen from both Lex Luthor (Kevin Spacey) and Kitty Kowalski (Parker Posey). It looks like Lex is trying to lure Superman into his trap by having Kitty put out a distress signal. Though she was first supposed to fake her distress, Lex actually puts the two in a state of danger by cutting the brakes.
His reasoning? Because Superman can tell when a female is pretending.