This may be one of the most useful sites on the web. Check out the list of websites that GPL librarians use to answer questions. You will want to bookmark this one. 

Acronyms and Abbreviations

Almanacs

Anywho Phone Directories

Area Code Directory 

Associations on the 'Net 

Biographies 

Calendars, Perpetual 

Calorie and Fat Content Chart 

Census Quick Facts - State and County

Census Quick Facts - Current figures

CPI Archives, full report, 1994- 

CPI Archives,  1913-

Conversion Site

Currency Rates 

Dictionaries Online - Foreign Language Dictionaries 

Divorce Forms - NC 

Driving Directions / Maps 

Economic Data and Demographics 

FedStats 

The Fifty States 

Greensboro101

Holidays, World 

How Stuff Works

Language Translator, Another Translator

Language Learning Library

Law Dictionary 

Law Encyclopedia

Lawyer Directory, Martindale-Hubbell

List of Lists (Best of...), more Lists

Loan Calculator

Lottery Results

Maps - All the Worlds

Movie Database

News and Newspapers

NADA Vehicle Pricing Guides

Percent Calculator

Quotations

Salary Relocation Calculator

Salary and Wage Surveys

Serials Directory 

SIC / NAICS Codes Conversion

Statistical Abstract of the United States

Thesaurus

Time Zones

The Value of a Dollar

Vital Records Online

Zip Code Directory