I love watching Letterman when he has no idea who his guests are. This happened on Monday night when Laguna Beach It Girl, Kristin Cavallari was his guest. He could not get her name right - it took at least 3 or 4 times. Then he asked about what the hell LB was and what her new show was about. He then said we have a clip and she was all shocked since they had nothing. Kristin kept her cool, looked great, joked around and came across as the fun girl Stephen fell in love with. Her publicist must be proud - that media training is paying off.