I was looking to see if the text of Ray Bradbury's "There Will Come Soft Rains" was online, and it is, in a number of places. If you've not read it, it's absolutely stunning:
http://us.history.wisc.edu/hist102/pdocs/bradbury_martian.pdf But then, you absolutely must -- the penalty is lifelong regret -- watch this Uzbek animated adaptation of the story.
http://video.google.com/videoplay?docid=5725857229869560639&sourceid=docidfeed&hl=en I'm sure there's a better quality video of it around somewhere, but it's still pretty chilling. It's nowhere near as chilling as the text, but few things are.