Yoram Bauman, "the world's first and only stand-up economist", performing at Caroline's on Broadway (in NYC's Times Square), July 9, 2007, with a surprise group of economists in the audience (stage right).
Doug Zongker's "Chicken chicken chicken". Presented at the AAAS humor session, February 16, 2007. See http://isotropic.org /papers/chicken.pdf for a PDF