I Dream of Jeannie (1965)

S3E1 Fly Me to the Moon

Tony and Roger embark on an ambitious project to train a chimpanzee for a lunar mission. However, things take a surprising turn when Jeannie casts a spell that transforms the chimp into a human. When she attempts to revert him back to his original form, a mishap occurs, and Tony finds himself transformed into a chimpanzee instead. This unexpected twist leads to humorous and chaotic situations as they navigate the challenges of their new roles.