Media bashing? How about media killing? Everyone likes to clobber the media. But someone in Boston is going around killing them. First, an obnoxious radio talk host, then, before that news cycle winds down, a too handsome TV anchor and the host of yet another talk radio show -- all die violently. Strolling innocently into this murderous confusion is Ben Hudson, a photographer for a weekly newspaper, and hardly anyone's idea of a media celebrity. Hudson (weak stomach and all) accidentally discovers two of the bloodied corpses of what the newspapers and TV call "The Boston Media Blitz." This string of grisly killings of media figures has half the city wondering who'll be next-and the media haters wondering, "Gee, why didn't I think of that?" As the media body count rises, one fearful type wonders "Wouldn't a really angry letter to the editor been better?" Media-bashing was never like this.