Amadeus (1984)

Stewie yells at one of Lois's piano students, "E-flat, Salieri, E-flat!" which is a line taken from Amadeus.

Marshall's description of the taste of the best burger uses music that alludes to the 1984 film Amadeus, when Antonio Salieri describes the same music (by Wolfgang Amadeus Mozart) with the same accuracy and passion Marshall speaks of the burger with.

A clip of this movie with the conductor in the white/pink wig is shown three times in the commercial.