Another good web site is below. It documents all sorts of Urban Legends, some of the actually true.

Will tapping the top of a soda prevent fizz-over? Is it against Federal law to kill praying mantises? Are people buyig up dog tags in Vietnam and sending them back to service men's family in the US? Are people forming 'bonsai kittens' by making them live in square glass jars?

Look for yourself....(on the main screen click on the 'current' or 'additions' links at the top for stuff going around now)