Just watched this, which is a documentary about the first U.S. visit The Beatles made. There is no commentary, no plot, just footage of The Beatles being themselves.
What interests me about this film are the contradictions: their prim and proper image onstage clashes with the behind the scenes footage of them smoking and drinking and fooling around. You can already feel the tension, as John is often absent, and Paul at one time quips, "No, that's the married man," referring to John.
You can start to feel their social commentaries take root, in stark contrast to the stodgy and slick Ed Sullivan (who doesn't let them talk on his show.)
If you like The Beatles, I would highly suggest renting this movie. It was $2 at Blockbuster, and is infinitely more entertaining than something trivial and lame you could rent for $6 that happens to be a new release.