How about this handy all-in-one website called RefDesk.com which offers more than a hundred free reference guides, online tools and websites – all from this one place.
You can easily access multiple search engines (such as Google, Yahoo! and Windows Live Search); free dictionaries, thesauruses and encyclopedias; calculators and conversion tools; top news headlines (and links to nearly 40 online news resources), a calendar and time center; driving directions; and "daily diversions" that range from comic strips and viral videos to online games and fast facts. Cool! [via TechnologyLIVE]