James Kilpatrick's language column this week covered two types of redundancies: malignant and benign. Some (nape of the neck, skip over, etc.), he writes, aren't as bad as others (hot water heater, 2 p.m. this afternoon).
William Safire's On Language column is a good one -- about the origin of the money quote and the background of some movie lingo.
Bill Walsh wisely cautions against the rote deletion of that, no matter what your college professors taught you.
And Ruth Walker talks about inspired uses of metaphors.