Lynne Truss

Much fuss was made about this book a couple of years ago when it was freshly printed. It’s billed as a “zero tolerance approach to punctuation,” but the American version, at least, spends fully half the text discussing the apostrophe.

For a grammar book, it’s amusing, and author Truss has a readable, if sometimes snobbish, voice.
Grammar mavens should definitely check it out, but real writers are probably better off sticking with Strunk and White.