When most people think of publicists, they picture someone like Vincent Chase's fast-talking, cell phone-addicted, workaholic publicist, Shauna Roberts (expertly played by Debi Mazar) on HBO's "Entourage." In reality, most of these traits are actually true of Hollywood publicists, who are on-call 24/7 for their A-list clients. Whether they're crafting an actor's image, babysitting a hard-partying starlet, fielding phone calls from press, or helming a multi-million dollar movie campaign, publicists are an integral part of the showbiz machine. And they're getting paid big bucks to do so. "The...