Watch history repeat itself as John Knoll, one of the creators of Adobe Photoshop recreates the first demo he ever gave with the product.

In this documentary, the founders of Adobe Photoshop - John Knoll, Thomas Knoll, Russell Brown, and Steve Guttman - tell the story of how an amazing coincidence of circumstances, that came together at just the right time 20 years ago, spawned a cultural paradigm shift unparalleled in our lifetime.