FirstGov US Government's Official Web Portal for all government transactions, services and information.
Government Information Locator Service Identifies, locates, and describes publicly available Federal information resources, including electronic information resources.
HHS Office of Inspector General - List of Excluded Individuals/Entities
This site maintains the List of Excluded Individuals/Entities, a database which provides information to the public, health care providers, patients and others relating to parties excluded from participation in the Medicare, Medicaid and all Federal health care programs.
National Archives Holds the records of the United States Federal government. On-line access to art works, census data, US legal manuscripts, the Federal Register and more.
National Climatic Data Center The National Climatic Data Center (NCDC) is the world's largest active archive of weather data.
PACER Public Access to Court Electronic Records (PACER) is an electronic public access service that allows users to obtain case and docket information from Federal Appellate, District and Bankruptcy courts, and from the U.S. Party/Case Index. Fee based site, but well worth the small fees.
Unites States Code The Code is a consolidation and codification by subject matter of the general and permanent laws of the United States. This link has a searchable database of the code.
United States Patent and Trademark Office Patent and trademark information in the United States, including free database searching of registered trademarks, registration information and more.