Paul McCartney dreamed the melody of "Yesterday" one night and immediately wrote the music the next morning. He then looked around for a month to make sure that he didn't subconsciously plagiarize it from somebody else.
The Beatles wrote into their contracts for American concerts that they would not play in front of segregated audiences.
There is a man who claims to have travelled to an alternate dimension in which The Beatles never broke up and brought back a mix tape of Beatles songs no one in this dimension has ever heard.
John Lennon once called an ‘emergency board meeting’ of the Beatles in order to inform his bandmates that he’d realized, while tripping on acid, that he was the second coming of Jesus.