So I myself am traveling from site to site to see what oddities people might have. Beta Archive being Beta Archive I was, and still am, certain that at least a few of you here would have found interesting Tech Demos or Beta Footage over the years. With only about a week to spare, if you have a YouTube channel of your own, now is a very good time to either make your own videos that meet this criteria public or fill out a form to keep them unlisted and shareable by link. If not, feel free to just share away any interesting links or playlists you might have seen.
There are a couple of projects in the works for collecting these videos, generally organized around a particular niche. If you are interested, see the Unlisted YouTube Video Scramble section of this Data Horde page