Where have the good women’s movie roles gone? “For the most part, the current fare seems to be channeling the 1950s, with female characters offered up only as accessories — ornamental but unnecessary. And so, in the movies with muscle, we see them as nurturing friends (“Capote”), neglected wives (“Brokeback Mountain,” “Syriana”), pregnant helpmeets (“Munich”), and objects of lust (“Match Point,” “King Kong”). Has even one heroine turned up this season who is as compelling as, say, a penguin?”