Courtesy of writer Charles McGrath, in last week's New York Times Book Review, I have just learned all sorts of unexpected things about the lovely and talented Carrie Fisher, author of the new tell-all memoir Wishful Drinking. For example -- did you know that George Lucas wouldn’t let Ms. Fisher wear a bra under her Princess Leia shift because, as he patiently explained to her, there is no underwear in space: according to Lucas-physics, if you were to wear a bra in a weightless environment, your bra would strangle you...