That sounds like a gem (the Silent Partner). I have a Kino boxed set of Keaton's work that includes some television, even some commercials for (I believe) the SInclair Oil company. I suppose some people would feel sorry for him, you know, "A great star, having to take work as blah, blah, blah." But when I watch him in those situations, I never get the feeling that he's feeling sorry for himself. I have a quote of his that I keep nearby. He says, "It seems to me that if you are a good craftsman your principal concern should be to keep working."
"Immorality may be fun, but it isn't fun enough to take the place of one hundred percent virtue and three square meals a day."