Further clarification, this is a topic for TV shows that sounded like good ideas but had ultimately flawed execution.
The thing is, I know that kind of thing, I've seen it happen a thousand times, and yet I can't think of any specific examples. Probably because I don't like TV very much and I don't remember to watch a lot of new serieseses.
Come to think of it, You Don't Know Jack was good for its first episode, but by the second episode (which came on immediately after), every repeated joke was grating on my nerves.