I don’t know when they began on the networks, but this is about the TV movies shown on the various networks, for example the “CBS Sunday Night Movie”, or whatever day or network the movie was on “The ABC Wednesday Night Movie” etc.

Were these seen as television programs in and of themselves and were they cancelled like other TV programs? When was the last time the Big Three networks (since it seems FOX didn’t too these) were shown? Probably the 1990’s? Again, we’re they cancelled officially or just dropped?

They were also ranked for the season as TV programs. “NBC Monday Night at the Movies” was a top 10 series for several years.

NBC launched "Saturday Night At The Movies" in the fall of 1961.

When was the last time the Big Three networks (since it seems FOX didn’t too these) were shown? Probably the 1990’s? Again, we’re they cancelled officially or just dropped?

Fox actually did have Monday night movies in the early 1990s. Actually, these movie umbrellas on all the networks generally showed a mix of both theatrical and TV movies. The one exception was the various ABC Movies of the Week, which were strictly TV movies produced for them, never theatrical.

The networks continued to show movies on weekends through the early 2000s, but by then those were all theatrical films, TV movies having shifted to Lifetime, TNT and other cable channels. ABC had their Big Picture Show for recent theatrical movies. They tried to show James Bond movies on Saturday nights, but that bombed big time and they cancelled that after a few weeks. I think networks stopped showing movies on weekends by the late 2000s because not many people cared about movies on network TV anymore, thanks to pay-per-view, DVD rentals and movie-only channels on cable like AMC and TCM, and reality shows were a lot cheaper to produce.