Bart says a variation on the line "Of all the gin joints, in all the towns, in all the world, she walks into mine."
Episode title is a play on the name of this film.
mentioned in dialogue
Mr. Burns is called the Crypt Keeper
Lisa mentions Tim Allen as Buzz Lightyear
Peter Griffin from Family Guy's picture is in a book.
while Bob hunt the Simpsons in Rome Marge says that she feels like in the movie "The Bourne Identity"
Stan Smith from American Dad's picture is in a book.
The title is inspired by a visual gag: a picture of "Family Guy" character Peter Griffin with the caption, "Plagiarismo."