 The song used during Duffman 's first and subsequent appearances is " Oh Yeah " by Yello , popularized in the final scene of the film Ferris Bueller 's Day Off . The Original Famous Ray 's Pizza shop Homer sees is a parody of independently owned pizza stores that carry the name " Ray " in their name . The musical sequence played during the Flushing Meadows segment is a stylistic parody of the piece Flower Duet from the opera Lakmé by Leo Delibes . When the traveling bus passes by Hasidic Jews , Bart mistakes them for ZZ Top , and when Bart visits Mad magazine 's offices , he sees Alfred E. Neuman , the Spy vs. Spy characters , and cartoonist Dave Berg . The actor in the musical number " You 're Checkin ' In " was based on Robert Downey , Jr . , who was battling a cocaine addiction during the time of the episode creation , just as the character in the musical was . The sequence where Homer races alongside the carriage in Central Park was a reference to a similar scene in the film Ben @-@ Hur . The final scene when the family is crossing the George Washington Bridge uses a version of the song " Theme from New York , New York " , which continues to play throughout the credits . 
