Yellow Submarine (1968)

Yellow Submarine (also known as The Beatles: Yellow Submarine) is a 1968 animated musical comedy adventure film inspired by the music of the Beatles, directed by animation producer George Dunning, and produced by United Artists and King Features Syndicate. Initial press reports stated that the Beatles themselves would provide their own character voices. However, aside from composing and performing the songs, the real Beatles participated only in the closing scene of the film, while their cartoon counterparts were voiced by other actors.
The film received widespread acclaim from critics and audiences alike, in contrast to the Beatles' previous film venture Magical Mystery Tour. Pixar co-founder and former chief creative officer John Lasseter has credited the film with bringing more interest in animation as a serious art form, which was thought of as a children's medium at the time. Time commented that it "turned into a smash hit, delighting adolescents and aesthetes alike." Half a century after its release, it is still regarded as a landmark of animation.
John Lennon later said: "I think it's a great movie, it's my favourite Beatle movie. Sean loves it now, all the little children love it."