Can a computer win 'Jeopardy'?

What is Watson, the machine that's aiming to give "Jeopardy!'s" most brilliant minds a run for their money? That's the answer to the game show's big upcoming stunt-casting question. The IBM-created artificial intelligence -- three years in the making, named after IBM founder Thomas J. Watson -- will appear on-air alongside "Jeopardy!" champs Ken Jennings [...]