Watson also tackles some of the greatest problems in understanding text: It's open domain--not specific to a particular industry or topic areas.
IBM's Watson is a great example of harnessing the essence of search architecture, and combining it with other non-database technologies in order to tackle problems like answering questions not only for Jeopardy, but also for detecting patterns and suggesting solutions in healthcare, terrorism detection, fraud detection, or reputation monitoring and risk mitigation. Decision support has been a goal for decades, and this kind of system will make it possible.
For more on Watson, see our link on idc.com at http://www.idc.com/downloads/IW20110217.pdf