Walt Mossberg, the author of the Wall Street Journal Personal Technology column (no fee req'd), gives a positive review to a nifty fee-based utility, GuruNet, in GuruNet as a Reference Tool Goes Beyond Search Engines. The program costs $35 and is marketed as "the ultimate reference program: encyclopedias, dictionary, thesaurus, companies, celebrities, stock prices, and much more."

See also this update from March 11: Atomica Unveils GuruNet 4.0.