I like School Library Journal's book of the week features. They're short and well-written, with enough information to give me an idea if my kiddo would like the book—or in the case of this week's pick, if I would like it. The May 15th selection is The Wand in the Word: Conversations with Writers of Fantasy, by Leonard Marcus. He's the same Leonard Marcus who edited Dear Genius, Ursula Nordstrom's book of letters, a must-read for fans of children's literature.
Leonard Marcus's web site can be found here.