IBM Watson really is an amazing piece of software, much more interesting than Deep Blue. Chess, like all board games, is very artificial. While there’s no doubt a technical achievement in being able to search a large number of well defined states in parallel, but it is a bit abstracted from real problems. Watson on the other hand deals with natural language. You ask it random lookup questions, and it answers. It’s a technology – along with Siri – that is futuristic.