Some of the better quality video archives, too. Most of them have interlaced MPEG-2 versions available, although a handful of the older ones do unfortunately have incorrect field order set in the MPEG headers

There is work underway to replace those bad ones! When the IA is back up, you can find some uploaded here: https://archive.org/details/@davidga

There's been several people in the archive community identifying and pointing them out, digging through large tape collections as well of syndications of it. David however got to go through the original masters recently

If only TechTV had such an archive