Using the Game Show Jeopardy, IBM is working on improving the capabilities of a computer to understand questions the way people understand them. They have two of the top winners on Jeopardy, Ken Jennings & Brad Rutter competing against the computer who they call watson.
You most likely won't be interested in the first half of this, but if you go to the second half you will get an idea just what is going on if you haven't watched it yet. The third night will be on tonight at 7 p.m. if you want to watch it live:
http://blogs.howstuffworks.com/2011/02/16/jeopardy-ibms-watson-supercomputer-vs-ken-jennings-and-brad-rutter-day-2/ (http://blogs.howstuffworks.com/2011/02/16/jeopardy-ibms-watson-supercomputer-vs-ken-jennings-and-brad-rutter-day-2/)