The Beatles

The Beatles were a British rock/pop group whose popularity was at its peak in the U.S. from 1963 to 1970.

The references are:

• The earliest Beatles reference can be found in the episode "Arthur's Spelling Trubble." When Arthur is reading his dictionary, one of the entries is called "Abbey Road."
• "Arthur - It's Only Rock 'n' Roll": The scene where U Stink are chased by preschoolers has music that begins with the opening chord of the song "A Hard Day's Night" and continues in the style of the song. There was a similar chase scene in the movie A Hard Day's Night. Also, in "Manager of My Dreams," the Backstreet Boys are wearing uniforms resembling those worn by the Beatles during the Sgt. Pepper's Lonely Hearts Club Band era.

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  The yellow submarine poster

  "Prunella and the Disappointing Ending": A place in the final "Henry Skreever" book is called "Castle Penny Lane", referencing the song "Penny Lane."
• "The Secret Origin of Supernova": A model of a yellow submarine is seen on a shelf in Freddy K.'s store. This could be referencing the song (and movie) "Yellow Submarine." A yellow submarine is also seen on a poster in The Sugar Bowl in several episodes, including "Sue Ellen Chickens Out".
• "The Agent Of Change": Binky mentions a character from the movie Trucks named "Rita the Meter Maid." This is likely a reference to the song "Lovely Rita," a song off of the Sgt. Pepper's Lonely Hearts Club Band album.
• "Buster Baxter and the Letter from the Sea": Buster asks "Do octopuses have gardens?", a reference to "Octopus's Garden."
• "Muffy and the Big Bad Blog": The name of Francine's and Muffy's advice column is called "She Said, She Said." This is the title of a song from the album Revolver.
• "In My Africa": Brain, Cheikh and D.W. walk across a zebra crossing looking like the Abbey Road cover. Brain's cousin Cheikh is possibly a reference to the character of the same name in the Beatles' film "A Hard Day's Night."
• "I Wanna Hold Your Hand": Refers to the song of the same name.

  

  MCTC

• In "The Last Tough Customer," the Tough Customers, as MCTC, wear outfits similar to Sgt. Pepper's Lonely Hearts Club Band.