George Harrison guest stars in the episode as himself. He was the second Beatles’ member after Ringo Starr (in “Brush with Greatness”) to appear on The Simpsons. When Harrison arrived at the recording studio in West Los Angeles to record his lines, the casting director told the episode’s show runners, Al Jean and Mike Reiss, that Harrison was coming and that they were not allowed to tell anybody about it because it was intended to be a secret to the staff. Jean, Reiss, and the show’s creator Matt Groening went to see Harrison in the studio, and when they returned to the writer’s room, Groening said, “Guess who I just met? George Harrison!”, not knowing that it was supposed to be a secret. Harrison arrived at the studio by himself without any entourage or bodyguards.
Groening recalls that Harrison was “pretty glum”, and he was unenthusiastic when the staff asked him questions about The Beatles. However, when Groening asked Harrison about the Wonderwall Music album, he suddenly “perked up” because it was one of his solo albums that he was rarely questioned on. Harrison’s guest appearance was one of Groening’s favorites because he was “super nice” and “very sweet” to the staff. Jean said it was a “huge thrill” to have him appear. [x]