Have a look at this superb list put together by The Onion, entitled "Rattle and dumb: 13 rock movies that make their subjects look like dicks." Beatles fans should know exactly where this is going.
5. Paul McCartney, Let It Be (1970)
How can you hate a guy who worked overtime to prevent The Beatles from breaking up? It’s a tall task, but Paul McCartney is up to the job in Let It Be, a document of the acrimonious sessions for the aborted Get Back album, which was also later released as Let It Be. McCartney was the only Beatle fully engaged in the band by 1969, and judging from Let It Be, he corralled the other members by being an overbearing bully. The film’s most famous scene features George Harrison finally breaking down under McCartney’s constant nagging, promising to play whatever Paul wants, or to not play at all. Small wonder McCartney played all the instruments himself on his first solo album.