You can check and use many things that Watson does by using trying and using our cloud services: http://ibm.com/watsondevelopercloud. I know there is a lot of PR around Watson. But there are also real efforts and some state-of-the-art technology in speech, dialog, text analytics, vision, machine translation, etc. I am happy to answer any question you may have.
I don't know that this is "something that would matter to a business" per se, but here's something else they're working on with it: https://www.ibmchefwatson.com/community
The Jeopardy thing was cool but since then it's turned into this mystery black box that will supposedly solve all your problems, but nobody's can seem to point to any real successes that would matter to a business. Honestly it seems mostly like marketing fluff built on some midly proprietary distributed computing technology.