Have you ever wanted to know the answer to life, the universe and everything?, well ask Google (Surprisingly, the calculator gives you the answer) ;)
Right after Google's answer, Wikipedia comes to the recue for a more throughout answer :). What I found really interesting about the computer who first answered this is the comeback to the surprise:
and that quite definitely is the answer. I think the problem, to be quite honest with you, is that you've never actually known what the question is