I'm enjoying Eats, Shoots & Leaves. OK, some of the writing is self-consciously funny and the anecdote on the cover is the clean Panda joke, not the pornographic Panda joke (or the koala one), but it does it for me.

I'm just reading the chapter on exclamation marks, which includes traditional usage:

1 in involuntary ejaculations: "Phew! Lord love a duck!" and
6 to deflect potential misunderstanding of irony: "I don't mean it!"

Lynne, I think you missed one:
7 in business email, to signify incredulous annoyance: "I can't believe you left off our site! The one you've listed isn't even a tourist office!"

Certain vistors to this site may be interested to learn that an exclamation mark is known variously as a screamer, a gasper, a startler or a dog's cock.