The Beatles are one of my favorite bands, but it seems like every time some band makes it big, there has to be a movie about them. At least Elvis made movies with plots, but I won't go there. I would expect to see a Backstreet Boys, N'sync, and espcially Brittney Spears movie. Knowing my luck, they'll make a movie will all of them, and civilization as you know it will be doomed. I have a high respect for the Beatles, but in my eyes, leave the acting to real actors.
Actors make movies, musicians make music.