If you'd like to get an idea about the different ways people are using Watson Technologies, check out some of the Watson Ecosystem Partners (http://www.ibm.com/smarterplanet/us/en/ibmwatson/ecosystem.h...). There's a variety of partners that aren't listed on our partners page, in particular you mentioned Vacations, so you might be interested in WayBlazer (http://wayblazer.com/), a new company founded by Terry Jones - former CEO of Travelocity.com and founding chairman of Kayak.com.
The big thing with Watson is that it works with people to make them smarter, rather than replacing people. Watson isn't designed to be a single global AI system that will enslave us (well, at least not yet), rather it's designed to be trained so it can go in depth on various topics to make humans smarter at their jobs - whether that's medicine, finance, travel, cooking, or who knows what else.
The big thing with Watson is that it works with people to make them smarter, rather than replacing people. Watson isn't designed to be a single global AI system that will enslave us (well, at least not yet), rather it's designed to be trained so it can go in depth on various topics to make humans smarter at their jobs - whether that's medicine, finance, travel, cooking, or who knows what else.