Monroe's famous happy birthday song to President John F. Kennedy, while another one is an allusion to Peter Pan flying through the window. The book that Krusty tries to sell is a reference to Madonna's book entitled Sex. "NRA4EVER", the message that appears on a cash register during the opening sequence reference in a trivia question, is a reference to the National Rifle Association. Reception The episode ranked among the ten most heavily viewed episodes of the seventh season. After its initial airing, the episode received a Nielsen rating of 9.5, and a Nielsen rank of 48. The episode has become study material for sociology courses at University of California, Berkeley, where it is used to "examine issues of the production and reception of cultural objects, in this case, a satirical cartoon show", and to figure out what it is "trying to tell audiences about aspects primarily of American society, and, to a lesser extent, about other societies". Some questions asked in the courses include: "What aspects of American society are being addressed in the episode? What aspects of them are used to make the points? How is the satire conveyed: through language? Drawing? Music? Is the behavior of each character consistent with his/her character as developed over the years? Can we identify elements of the historical/political context that the writers are satirizing? What is the difference between satire and parody?" Considered a spoof of television clip shows, the episode is seen drawing attention to prevailing televisual conventions and reminds viewers that The Simpsons itself participates actively in that same cultural legacy. The authors of the book I Can't Believe It's a Bigger and Better Updated Unofficial Simpsons Guide, Warren Martyn and Adrian Wood, thought that "the out-takes [were] up to standard" and said that the episode contains "a number of great self-referential moments". Simone Knox praised its visual style in her article Reading the Ungraspable Double-Codedness of "The Simpsons". Knox referred to it as not simply a clip show, but a clip show "that looks at the series with a sense of hyper-self-consciousness about its own textuality". The episode itself has been described by some critics as a kind of self-imposed benchmark of the show itself, with writer Bill Keveney commenting, "the show picks its own benchmarks, as it did in 1995".DVD Movie Guides Colin Jacobson said even though the episode is a clip show, it "gussies up the