Beatles/Across the Universe movie fans: What is your favorite clever Beatles reference within the film?

For example, even though the song Get Back is never played, the guitarist’s name is JoJo, referencing the guy mentioned in the song. There are references like this all throughout the film… what are some of your favorites? Which ones were you proud of yourself for catching? Which ones were way too obvious? Which ones were hidden very well? Did you predict any of them?

Bonus lurve for rewatching the movie just for my question!