expensive, as the use of computer animation was not widespread when the episode was produced. Director Jim Reardon wanted to replicate films that ended in a similar way, and commented, "I remembered that every movie located in New York would pull back if you were leaving town on a bridge." Shortly before the episode aired, the production staff contacted Fox to make sure they would not run commercials during the credits. Ken Keeler, who wrote the lyrics for the "You're Checkin' In" musical number, spent two hours in a room alone to write the song. Upon sharing the lyrics with the rest of the production staff, some revisions were made, although little was changed. Bill Oakley was unsatisfied with the part of the musical where the actor sings, "Hey, that's just my aspirin!", claiming that a better line could have been written. Due to the prominence of the World Trade Center in the plot, the episode was removed from syndication after the September 11 attacks. By 2006, the episode had come back into syndication in some areas; however, parts of the episode were often edited out. One previously such edited item is a scene of two men arguing across Tower 1 and Tower 2, where a man from Tower 2 claims, "They stick all the jerks in Tower 1." Co-executive producer Bill Oakley commented in retrospect that the line was "regrettable". In 2019, a hand-drawn cel from the episode, depicting the two towers, was given to the National September 11 Memorial & Museum, in what the curator termed a "hilarious and tender" donation. Some conspiracy theorists believe that a scene in the episode foreshadows the September 11 attacks: in it, Lisa holds a brochure for a $9 bus fare with the World Trade Center shown in the background. Showrunner Al Jean said in an interview with The New York Times in 2018, "There is a frame where there's a brochure that says New York at $9 a day, and behind the nine are the twin towers. So they look like an 11, and it looks like a 9/11. That one is a completely bizarre, strange thing." Bill Oakley, the episode's showrunner, reacted to a New York Observer article in 2010 via Twitter by saying, "$9 was picked as a comically cheap fare...To make an ad for it, the artist logically chose to include a silhouette of NYC. I signed off