Datasets
Data Repositories/Collections
Visual Analytics Benchmark Repository
UCI Machine Learning Repository
Digital Librarian - statistics
Visualizing.org Data Channels (science, medicine, economics, demographics)
InfoVis contest
InfoVis Contest 2007: Hollywood/IMDB
InfoVis Contest 2006: US Census PUMS Data
InfoVis Contest 2004: Publication History
InfoVis Contest 2003: Tree Comparison
Other Data Sources
Air Data: Access to Air Pollution Data
Geneology Data, U.S. Census Bureau
National Nutrient Database for Standard Reference
National Center for Health Statistics
Eamonn Keogh's Time Series Data Mining Archive
Gapminder Dataset, nice visual index FIND OUT WHERE THE BEEF is (data that is)