"It's like, 'How much more black could this be?' And the answer is, 'None. None more black,'" Nigel Tufnel says in This Is Spinal Tap. He could very well have been talking about Rebecca Wu's hair. The KSDK-TV (Channel 5) anchor used to wear it parted left to right, cut in a tragic, Aniston-in-Friends fluff bomb. Now it's more hard-hitting, appropriately blunt: a serious, no-bullshit shoulder-length bob with a tastefully vague middle part. Wu's colleagues Deanne Lane and Cindy Preszler, whose hairstyles morph like lava lamps, may get more face time, but when it comes down to it, the hair makes the local anchor, and by that measure, we're all about Rebecca Wu.