I see BusinessWeek has a bit on Eric Dezenhall, author of Nail ‘Em! It’s an excellent book about brutally competitive attack and defend PR tactics. Actually, it guts the PR industry’s silly tactics of press releases, briefings, messaging, education, and influence and replaces them with reality. It’s a devastating book. I have it on my shelf right along with a couple of other classics in this area: Rules for Radicals and The Prince. There are many such books, of course, if you like this sort of thing. Any good PR pro has these books practically memorized. They rarely call it PR, though.