Matrix . a movie which talks about a future where mankind is trapped by machines to produce batteries to power themselves. A pretty psyching phenomenon.

As of now, humans seem to mime the matrix concept …MIT Researchers have come up with a breakthrough – creating power from spinach..Day is not far I guess when one goes and buys vegetables to power their mobiles and current appliances .
http://www.cbsnews.com/stories/2004/09/24/tech/main645436.shtml