I haven't seen the Branagh film, but it seemed to ruffle a few feathers (and not just Papageno's).
The film of La bohème with Rolando Villazón and Anna Netrebko is extremely well done. It is a lip-synched film (not that you'd notice) following a studio recording and the Marcello on film is not the singer we hear - odd given that everyone else is 'playing themselves'.
I remember being thrilled by some of the images, particularly the storm scenes, in Zeffirelli's Otello, but too much of the music if chopped about for it to be completely satisfying.
Our chief weapon is surprise...surprise and fear...fear and surprise.... Our two weapons are fear and surprise...and ruthless efficiency....