Watson had the correct answer -- "Who is Michael Caine?" -- to the clue "He's worth every penny as Alfred Pennyworth in a 'The Dark Knight'," but Ken Jennings beat the computer's response time. The category was "M.C. 5," so Watson clearly understood that the answer had to fit the "M.C." mold. That said, one has to wonder why "Major Critical" and "Marine Corps" were even considered?