There are three programmes. My favourite bit was the cave bear. The Mummy bear and the cub were going deep in the cave, but then a cave lion came and found them, but the Mummy cave bear killed the cave lion and protected her cub.
There was lots about a giant sloth as well, but it wasn't called a megatherium, it was called the shasta giant sloth. And about Neanderthals and how they became extinct. There are lots of museums and places in the programme that I want to go to, so many that I can't even count them. There was a place near San Francisco were the stones were rubbed smooth by mammoths having a good scrub. I would love to travel all around the world and see all these places.
You can read more about the programme here: http://www.bbc.co.uk/programmes/p018c9fm - and you can watch it for another five days. It is for grown ups, but I liked it! (Edit from Mummy: image taken from BBC link above.)