Even though it's only about 20 years old, this is easily one of the most forgotten television shows I've ever encountered. Even the IMDB page has it all wrong and seems to get it confused with the play of the same name, of which this series was an updating. It's like everybody's memory was wiped clean.
The series revolved around the character of Martin (played by Harry Morgan, a man who must love to work) who lived with his daughter and her husand (Richard Sanders from WKRP) Paul, who designed toys and according to Martin " played with them too".
Martin was this free spirit who painted and never paid his taxes, he narrated the show's opening highlighting how eclectic each family member was, he himself marched to the beat of a different drummer.
My local UHF station played this show at five on Sunday and I remember being somewhat confused why it existed. It was clearly based on something but I'd never heard of the play or the film, I doubt most people had. Much of the show took place on the living room set and the writing was dated and weak. There weren't many laughs to be had.
Despite having the presence of Morgan and Sanders, YCTIWY faded after one unmemorable season and apparently, all evidence of it was destroyed.