An intresting read.

I myself have been a huge fan of Isaac Asimov's writing.
One short story in particular "The Last Question" I find to be rather mind blowing.
I would rather not ruin the story for you guys in this post so here is a link to the short story in full:

MultiVAX "The Last Question"

The short story has been posted for free by the people at MultiVAX.com.
I highly suggest reading it. It is an incredible work of literary art IMO.