This young actress has the feel of Mae West or Zsa Zsa Gabor, requiring not just men in her life but life in her men. She swings about the place on long dancer's pins, handing out cigarettes and advice. She is supposed to be the school loon, but is the only one with a coherent personality. Gyllenhaal is as bright and alive as Roberts once was. But now Roberts has turned into plastic, the grin intact. A grin quite the opposite of Mona Lisa's, and lately nowhere near as charismatic.