Another casualty of war: Barbara Walters's annual pre-Oscars special. ABC announced Wednesday that it was postponing the traditional chatfest as a result of the war in Iraq. No decision has been made on what will replace the show, which was to feature interviews with Nicolas Cage, Renée Zellweger and Julianne Moore. E!, meanwhile, says that Joan and Melissa Rivers will carry on with their Oscar pre-show, although what form the program will take is uncertain. I'm going to go out on a limb and predict it will be tasteless.