In several recent posts, I have drawn attention to the 1984 documentary, Jesus: The Evidence. The third and final episode is also available on Youtube. The uploader has mashed the aspect ratio horribly, but it's still fascinating viewing, especially if you are interested in the history of NT scholarship. The first three minutes is here and the main part is here:
The last three minutes is here.
The topic is the resurrection, Nag Hammadi and Gnostic Christianity (and the Gospel of Thomas), Paul, Marcion and the canon, and Constantine. It features lots of a young(er) Helmut Koester (in Jerusalem and a couple of other locations, one indoors) and, like The Gnostics (1987) documentary, the late Gilles Quispel (in Rome).