Encarta Encyclopedia - General interest encyclopedia. Bibliomania - Brewers Dictionary of Phrase and Fable as well as many other great ready reference resources. Maps On US - Excellent for driving directions. I have found this site to be highly accurate with it's directions and time estimates. Occupational Outlook Handbook - Government site that lists the outlook for any job.
Some information includes skills necessary, related jobs, average salary, job description, etc.
FedStats - One stop shopping for all kinds of Federal Statistical information. Great HTML tutorial. Lotus411 - Tips and hints on how to develop in Lotus Notes.