Acknowledgements
We wish to thank all those who created the applets linked to from this homepage, including Michael Healy, the Claremont Colleges; David M. Lane and his colleagues at the Rice Virtual Lab in Statistics, Rice University; John Marden, University of Illinois at Champaign-Urbana; Kyle Siegrist and his colleagues at the Virtual Laboratories in Probability and Statistics, University of Alabama at Huntsville; and R. Webster West, University of South Carolina.