Here are 2 that he often brings up:

Ivan Sutherland's Sketchpad demo - Object oriented graphics using a constraint based system (https://www.youtube.com/watch?v=6orsmFndx_o)

Douglas Englebart's demo - too many innovations to list, but includes real time collaboration (he demoed in a convention center while the system ran 30 miles away in his lab, connected by a leased line operating at 1200 baud!). People think he just invented the mouse, but the overarching theme in his work was augmenting human capabilities... http://dougengelbart.org/firsts/dougs-1968-demo.html

Which of those things are not in mainstream use? We have Skype and Google Docs and AWS for collaboration and client/server computing.

I hadn't seen the Sketchpad, thanks for the link.

One of the things that consistently impresses me about 1960s computing demos is the clarity of meaning and lack of jargon.