Peter Norvig is Director of Research at Google. Back in 2000, being fed up with boring PowerPoint, he decided to use a famous speech by President Lincoln to demonstrate how a poorly designed PowerPoint translation could destroy its communication power completely. He put the creative "master piece" on his web site and more or less forgot about it.
Gettysburg address
Today (November 2008), the "Gettysburg PowerPoint presentation" still comes out #4 on a Google search for "powerpoint presentation". (Check also "the making of" page)