Mine: Za. His sudden hostility towards The Doctor & his "companions" really annoys me.

I think this is a terrific story and I don't think it does much wrong at all. I would say that the jungle scenes are very much of their time. They just about work, but it's quite difficult to un-see the cast just hopping up and down and having foliage slapped into their faces. And were it made today, the animal attack on Za would be much more convincing and interesting.

I mean, part one is flawless! Absolutely no problems with it at all! One of the best tv pilots ever made. (The unaired version is pretty good too)

As for the rest of the story… it’s fine, but does drag a bit and the cavemen aren’t the most interesting things in the world. But I suppose this was supposed to be educational at first so I can forgive it.