Fortune has flagged up a video from 2011 of an eyewitness retelling how Jobs behaved and interacted when seeing Xerox’s PARC revolutionary graphical user interface inventions for the first time. Although the video is old, it seems to have gone largely unnoticed until this week and features some interesting anecdotes about the events.

According to Tesler, a PARC scientist who ended up working for Apple shortly after, Xerox came to Apple about a business development deal regarding more mundane matters like Xerox distribution. In the end Apple sold Xerox bargain-priced shares in exchange for these deals, including the agreement (pushed through by Jobs) that Apple would be able to see everything “cool” going on at Xerox Parc. Tesler describes Jobs as being unable to hold back his excitement, paraphrasing:

The extract above is part of a 100 minute video, if you are interested in the entire roundtable.