Definition of Obnoxious

Is there anyone on this planet more obnoxious than Ann Coulter who just appeared on the Today show? I suppose one could make a case for Rush Limbaugh or Bill O'Reilly but my vote is for Coulter. Why isn't it possible for many conservative pundits to make their case without being so hostile? It greatly distracts from the point they're attempting to make. Take George Will for example. He's as conservative as they come yet he has the ability to present his arguments in an intellectual manner that doesn't get personal or nasty. Why can't the others do that? Maybe it's because they're not as interested in the issue as they are in basking in the limelight.