I suppose that it is relatively rare for the name of a show to be dropped in conversation within that show (particularly sitcoms and dramas), but here are a few examples of what I am referring to:
The Brady Bunch: Toward the end of the pilot episode, Mike refers to them as "the whole big blooming Brady bunch" or something like that (paraphrasing).
St. Elsewhere: In the St. Elsewhere/Cheers "cross-pollination" episode, the doctors drop by Cheers after work. They mention that they are doctors at St. Eligius, to which Carla sneers, "St. Elsewhere!?" (I suppose "Cheers" got mentioned quite a bit during Cheers, but since "St. Elsewhere" was the derogatory name for the hospital, it was usually only called that by outsiders, as in this example.)
One Tree Hill: The name of the town was Tree Hill, but the only time that I can recall when it was ever referred to as "ONE Tree Hill" was the episode in which Lucas was considering moving away, to which his mother told him, "there is only one Tree Hill."
The Brady Bunch: Toward the end of the pilot episode, Mike refers to them as "the whole big blooming Brady bunch" or something like that (paraphrasing).
St. Elsewhere: In the St. Elsewhere/Cheers "cross-pollination" episode, the doctors drop by Cheers after work. They mention that they are doctors at St. Eligius, to which Carla sneers, "St. Elsewhere!?" (I suppose "Cheers" got mentioned quite a bit during Cheers, but since "St. Elsewhere" was the derogatory name for the hospital, it was usually only called that by outsiders, as in this example.)
One Tree Hill: The name of the town was Tree Hill, but the only time that I can recall when it was ever referred to as "ONE Tree Hill" was the episode in which Lucas was considering moving away, to which his mother told him, "there is only one Tree Hill."