Fox's unsightly (yet uproarious) makeover saga, The Swan, is looking good in Nielsen's eyes. Wednesday's premiere attracted 15 million viewers and retained nearly 80 percent of its huge American Idol lead-in. By comparison, The O.C. and 24 have been holding on to just 50 percent of Idol's audience. ABC's latest Bachelor edition, meanwhile, got off to a so-so start with 11 million viewers.