Dig this effing website:
http://www.wolframalpha.com/It's an attempt to collect the whole of human knowledge and put it at our fingertips. Sorta like asking the computer to calculate something on Star Trek, but you have to type it.
There's a
video demonstration.
They obviously need to throw some more hardware at it, the "I can't do that, Dave." message pops up from time to time.
