Encyclopedia Britannica: Brings you links to the best Web sites, leading magazines, related books, and the complete contents of the Encyclopedia Britannica!
U.S. Census Bureau: Population statistics and more
Measure 4 Measure: A collection of interactive Web sites that estimate, calculate, evaluate, translate, etc.
Yahoo Directory of Quotations: quotations, quotations, quotations
The Free Library: extensive list of various math and science calculators
Thesarus.com: Look up synonyms here. Site also includes crossword and word search puzzles, a translator, the word of the day, and a dictionary that searches many on-line dictionaries and returns to results.