episode title is a play on the Beatles' album and animated feature
In the end of the episode Homer sings that it will be explained what happened to the characters afterwards like it was done in American Graffiti.
Mentioned by name
In the Henry the VIII segment, Anne Boleyn's card reads: "A Son'll Come Out Tomorrow."
In the library is a poster for price guides for trading cards from this show.
The 3rd segment is a spoof of Amadeus, a fact which is pointed out at the end