First off: DRIPPING WITH BIAS. If you are about to watch this to make an informed turn in your faith or spiritual life don't watch this.
Second off: I am a Christian, just to get that out of the way. There was absolutely no actual evidence to back up these claims. All it is is scripture being read at the viewer and then "experts" saying why the Gospels were true (somehow still not providing evidence). How many people did you have to interview to get them to say what you wanted?
Another thing, the whole part about Gnostic Christianity being basically wrong just because it was written a century later than the Gospels where...ok...half the text you used came from 2 centuries after the original Gospels were written. (Don't believe me? Re-watch this and check the dates in the top left hand corner)
Frankly I'm embarrassed right now at the ignorance of some people.