Friday Happy Hour: Book Tour Edition

Mr. Sedaris put on a great show, reading us an upcoming New Yorker piece, selected entries from his diary, and excerpts from his next book (scheduled for June 2008). If the Sedaris Tour Bus pulls into your town, I recommend you try to see him.
But what do I know? I've only been to a handful of events like this. Today's topic in the Friday Happy Hour series is book readings. Who have you seen? Who impressed you? Who wasted your time?