This past July, shortly after Doug Engelbart passed away, his friends organized a moving memorial for him. There were many wonderful tributes, and a television journalist also did some short video interviews with people who knew him well. If you’re interested in getting a tiny taste of who Doug was, the videos — especially the tributes — are a great source for that.
Here’s my interview (~6 minutes):
Here’s what Adam Cheyer said (~8 minutes):
You can view the whole list here.