Johnny Costa was the musical director, pianist, conductor, and arranger for this show. Following the death of Costa in 1996, his music continued to be used on the show.
Let's think of something to do while we're waiting / While we're waiting / For something new to do / Let's think up a song while we're waiting / That's liberating / And will be true to you / Let's think of something to do while we're waiting / While...
In the 1979-1981 episodes when Mr. Rogers takes off his sweater and closes the closet door, he'd often close it too fast so it came open a ways, but then the closet door begins to close on its own, as if someone were behind the door pulling it closed.
Right before the end credits of "Conflict" #1525, a message appears on screen that says, "And they shall beat their swords into plowshares. And their spears into pruning forks; Nation shall not lift up sword against nation. Neither shall they learn war anymore".
Various theme-week episodes were released to video in the late-1980s in a special format. For instance, the week of "Day Care and Night Care" (#1516-1520) was released to video under the title "When Parents Are Away", and featured the Neighborhood of Make-Believe segments, edited into new segments featuring Mr. Rogers, as well as old segments like him visiting the day care home. In the old version, Fred meets Mr. McFeely at Brockett's bakery and they go to the day care home together. But in the video version, Mr. McFeely visits Mr. Rogers from Brockett's bakery and they leave from the house.