I'm currently re-reading Neil Gaiman's story collection Fragile Things, which contains this terrific story set in the universe of The Matrix. Gaiman was asked by Warner Bros. to write a story set in the world of The Matrix (they sent him a copy of the script), and the result, "Goliath," was posted at the film's website about a week before the movie opened. This is such a fine example of how a great story works, and it is so quintessentially Gaiman. Enjoy!
"Goliath," by Neil Gaiman