The Plumber is a 1979 made for TV thriller from Australia.
The accents alone should qualify it.
This movie includes such thrills as looking, looking at things, and pipes.
It contains all the convincing acting skill of pot heads on sleeping pills, but with Australian accents!
It has a solid realistic plot that would take any sane film maker all of five minutes to convey, but conveniently padded to last god knows how long.
There is quite a bit of looking in this movie.
And Australian accents.
The Plumber begs for riffing in ways few movies other than Manos ever dared to beg.
Just try it, you'll ... um, you'll ... you will be immersed in the blandness that is The Plumber.