Guessing Correlations - Estimate correlations from scatterplots.
Regression Applet - Observe the effects of outliers.
Histogram-Old Faithful - Experiment with different bin sizes.
Correlation Coefficient - Choose a correlation, see a plot.
Chance News - See news articles involving Statistics.
Gallup Polls - See news articles and results of polls.
College Ratings - Deja.com ratings of colleges and universities.
Human Development Indicators - From the United Nations Development Programme
Statistical Universe - Search U.S. Government Statistics
Historical U.S. Census - Data from U.S. Census, from 1790 to 1970.
State data - Listings of data by state
Data on the Net - listings of data sites, University of California, San Diego