Générique complet
Koko: The Gorilla Who Talks to People
Bertie Carvel
Narrator (voice)
Koko
Self
PP
Penny Patterson
Self
DD
Dale Djerassi
Self
LS
Lisa Schuster
Self
AS
Ann Southcombe
Self
MP
Mitzi Phillips
Self
Robin Williams
Self (archive footage)
Leonardo DiCaprio
Self (archive footage)
Peter Gabriel
Self (archive footage)
Isabella Rossellini
Self (archive footage)
William Shatner
Self (archive footage)
Sting
Self (archive footage)