The documentary from 2016 is under an hour long and highlights the special friendship formed between Koko and Penny Patterson, the woman who taught her how to communicate with sign language.
The California-based Gorilla Foundation that kept and studied Koko announced that she had passed away in her sleep on Tuesday.
She was born in San Francisco Zoo, but three years later she was moved to Stanford, where under the tutorship of Dr Francine Patterson and Dr Ronald Cohn she developed her skills.
Here are just some of the people Koko got to met.
The foundation says she has taught the world a profound amount about the emotional capacity and cognitive abilities of gorillas. He even showed her how to tune the bass and said he had a great experience connecting with her. Shatner was one of many who posted a message about Koko to Twitter after the news of her death broke and he included a photo of them meeting.
A foundation spokesman said it will honour Koko's legacy with a sign language application for the benefit of gorillas and children, as well as other projects.
Tributes from fans who grew up admiring and loving Koko flooded social media, including the thousands of comments commemorating the gorilla on the organization's Facebook post.
Koko was also famous for her love of kittens, and for expressing grief when her kitten Ball died. The story led to the popular book "Koko's Kitten", which can be found in many schools worldwide. She was gifted a box of kittens on her 44th birthday.
"We shared something extraordinary: Laughter", he said.
Her celebrity was also fueled in part by interactions with famous humans, like Rogers, whose show, "Mister Rogers' Neighborhood", featured Koko in a 1998 episode. "We hope that it now becomes unforgettable for you too".
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Now if that isn’t the epitome of what a BFF is, I don’t know what is! Selena continues to be on chronic medication. There is also a huge list of celebrities past like famous painter vincent Van Gogh who suffered with this disease.