I was reading Pet Sematary by Steven King, there was a brief Lennon reference. "Say the chorus of "Instant Karma" instead," something to that effect. I don't have the book on me, so I don't know. ._.
In The Secret Diary of Adrian Mole (again, don't have the book -- don't know if I even have the title), his mother is pregnant and is screaming "A Hard Day's Night" while having the baby.
A book called Carved in Rock -- short stories by rock musicians -- has one called "Liverpool Fantasy," and it's kind of an alternate sceneario of the recording of Please Please Me.
There are SO many Beatles references in The Beatles Anthology... ones like you would'nt BELIEVE, man. XD;;;