Out my way, we used to have Northwest Backroads with Grant Goodeve, ex-'Eight is Enough'. KING-TV produced it for many years and it also ran on KGW, KREM and NWCN. Well produced, just like their weeknight counterpart, Evening Magazine. They stopped airing new episodes about 8 years ago and I don't think it repeats on any of the NW TEGNA stations anymore.
More goodies, ex-YouTube.
KCOP Los Angeles signs off for literally 15 minutes after a very late movie and comes back on again. Two parts, sign-off then sign-on with part of 'In Studio,' a public affairs program. Taped around Nov 1988.
https://archive.org/details/capture-a-320
https://archive.org/details/capture-a-321
Ads from USA's old Cartoon Express block, taped 8/27/92
https://archive.org/details/capture-a-336
Promos from the defunct Action Pay Per View network, taped in December 1990 (before 'Total Recall'). This was just one of several PPV networks available back in the day. Request and Viewer's Choice were a couple others.
https://archive.org/details/capture-a-290
Of course, a lot more than that has been uploaded, but these are just the highlights.