Elaine Stritch & Donald Sinden in Two's Company (1975)

In this popular British television series we meet Dorothy McNab (Stritch), an American author living in London. She hires proper British butler Robert Hiller (Sinden) to run her home and thus begins an epic sparring partnership that lasts for 4 years - a long run for British television. McNab is brassy, outspoken and very American, Hiller is a traditionalist, who doesn't like Americans. They're both very competitive and are constantly trying to get the upper hand.

This series was very successful in Britain, and even had a good run on American television on the PBS stations in the 80's. It's since been somewhat forgotten, though can be found on DVD now. Above is part one of the pilot episode, uploaded to YouTube by cooperweekend.

As with many British sitcoms, this one inspired an American version. Set in New York, the situation was similar with an American author (Mimi Kennedy) hiring a British butler (Peter Cook).

Though The Two of Us (1981) wasn't as much of a success (it only lasted one season), it did have some fun moments. Above is the opening credits, uploaded to YouTube by matnally. The American series scores higher on the Obscurity Factor scale at about a 9

Obscurity factor: 2 (Known well in Britain, on DVD, available in part on YouTube)