Kristin Wiig was a guest on The Late Show with David Letterman last night. She talked with Dave about her summer shooting a movie in the Great Smokey Mountains town of Asheville North Carolina. It was a kind of hippie summer; while she was there she did some sensory deprivation, and meditated in salt caves, and there were drum circles. Dave reveals that he has no idea what a drum circle is. Later, they talked about how your parents never really understand what you do. Kristin said that her dad gets confused by the titles of the movies she does, and she also tells Dave what happens when he sees her sex scenes in her movies.