just read this CBS 60 minutes article and found it quite interesting. i can see it now, the new joke intro: "okay, a politician, a lawyer, and a scientist walk into a bar....."
http://www.cbsnews.com/stories/2006/03/17/60minutes/main1415985.shtml
http://www.cbsnews.com/stories/2006/03/17/60minutes/main1415985.shtml