I can watch the same episode like 20 times and still laugh to death. The script and dialogues are so brilliant. Each statement about human evolution contains a jewel in word playing- It is a pure Groucho Marx adaptation of Planet Earth. And Diane is just AMAZING. I don't even know how she does it to hold her face straight during some of the interviews... I had seen her in After Life and others and you notice right away how funny she can get. She deserves a price for this one and Cunk on Britain. It doesn't matter if they talk about dogs, discovering fire or cave paintings, there is always a brilliant sentence for each... A must see if you want to have some great laughs. So brilliant and funny.