WolframAlpha... I hope this is the real deal, it's the most amazing thing since, er Google!
http://www.wolframalpha.com/screencast/introducingwolframalpha.html (http://www.wolframalpha.com/screencast/introducingwolframalpha.html)
It is fantastic indeed, what you can throw at it.
Try this: http://www17.wolframalpha.com/input/?i=are+you+skynet%3F :D :D :D
Unfortunately it doesn't know about Amstrad...