Hitless Hit Album: Upon release, it had no singles issued (though "Strawberry Fields Forever"/"Penny Lane" were intended to be there, and the title track was a single in the 1970s).
No Export for You: The U.S. version of the original LP does not contain the infamous inner groove. It was only later restored on the later CD release, and it was included on on the 1980 U.S.-exclusive version of the Rarities compilation album.
Throw It In: The alarm clock in "A Day in the Life" was originally just marking when it would change, but it fit well as the first lyric that follows is "Woke up, fell out of bed..."
The Movie
Breakaway Pop Hit: The film versions of "Got to Get You Into My Life" and "Come Together" were hits for their performers and still turn up on oldies (and, for the latter, classic rock) radio.
What Could Have Been: Supposedly KISS was approached to play Future Villain Band, but they turned it down. (Given the recent flop their own movie KISS Meets the Phantom of the Park, it's not surprising.)