This documentary was actually just half of one, and then not even the documentary that was promised, thus my judgment of 4/10. It didn't even really question Darwin. It interwove an abbreviated biography of Charles Darwin and how he changed from someone who in his youth who took the Bible literally into the author of Origin of the Species with random vignettes of Christians that frankly, seem to make them look stupid.
The documentary is careful to say that what changed in Darwin was not a belief IN God, but a belief in what that God was. He was no longer convinced he was a benevolent God. The head scratcher to me here was that he had to take a trip to other lands on a sailing vessel to come to that conclusion.
As for the Christian stories, there is a trip to the creation museum where it is insisted that the world is only 6000 years old, there is a preacher in a pulpit saying that if Darwin's theories are true then everybody in that church is "an ignoramus", and one Christian lady who is working with the poor and homeless as far as feeding them and trying to house them. Now this lady takes the cake. First she says that evil is a result of the devil, and then she says that without hardship we really don't learn anything. So which is it? Is it the devil that causes the homelessness of the people she serves or God trying to teach a lesson? And if it is the latter why doesn't she give away everything she has - starting with those nice ear rings - so God can teach her something in her poverty and hunger? The one thing the documentary never does is go into any depth on why there is so much antipathy towards Darwin in the modern Christian community and what are the alternative Christian theories and their basis in something other than the literal interpretation of the Bible.
I'd say if you already know about Darwin and his life and work, this won't add to your knowledge. I'd skip it.