AP Stats Hypothesis Test Mistakes - "I made this video as a tongue-in-cheek warning for my students about common mistakes when writing solutions for hypothesis tests." Steven Willott, 2009 Presidential Award for Excellence in Mathematics Teaching, Francis Howell North High School.
The two above contain amazing descriptive stats for any level stats student. A related link is the software referenced by Hans, now freely available as a webapp at http://www.gapminder.org [Suggested by Doug Tyson]