After almost two years of steady hype (including a fascinating recent preview on 'Nova'
), the 'Jeopardy' battle between mankind and machine finally goes down this week
. Beginning tonight, the three-day war for trivia supremacy pits Watson, the IBM supercomputer, against 'Jeopardy' heroes Ken Jennings and Brad Rutter. Watson actually vanquished the two humans
in a recent practice round, so Jennings and Rutter had better get their game faces on. All hope for humanity (or, at least, humanity's future hopes of winning cash prizes and extended vacations) rests on the outcome.