A lot of people by now have seen the Beatles documentary by Peter Jackson of Lord Of The Rings Fame.
He also did a fantastic documentary on World War I called They Shall Not Go Old. He restored video in both Get Back (the Beatles doc) and They Shall Not Grow Old and in both cases did something amazing. If you haven’t seen them you really should.
Get Back really showed the creative process the Beatles went through, even when the band was nearing the end of its amazing run.
Producer George Martin said that when they were together no one else could possibly understand what happened.