This is THE classic Orangutan series to watch. I think some episodes (excerpts?) are available on Youtube Smithsonian Channel. Here is one - https://www.youtube.com/watch?v=V3hJgI2UrSg

Anybody who watches these will come away with a deep appreciation of the Natural World, Darwinian Theory and how Human-like (even more than Chimpanzees/Gorillas) Orangutans are. After a while you forget that they are a different species and start laughing/crying/empathizing with these beautiful animals.

Very highly recommended to watch with your kids and entire family.