Something for all librarians (and other library staff who work at public service desks) to definitely check out: The Top 100 Alternative Search Engines (as a PDF or a XLS) from AltSearchEngines.com. Read the Top 10 FAQ on the alt engines too. Every good librarian should be aware of alternative search engines, their strengths, and how to find the right one for the right job. In the age of digital media and still-hidden data inside databases of immense proportions, these alternative engines can be invaluable in finding information for our customers.
It would be great for libraries to have a brief brown-bag with staff about alternative engines – a kind of "bring your favorite alt engine" show and tell. I can guarantee that much would be learned by all.