Edgar Rice Burrough’s famous jungle hero Tarzan has been interpreted in many forms for movies and television both animated and live-action, as well as comics. But only one version, the 1966 series with Ron Bly as the jungle lord, featured a guest appearance by the Supremes as nuns. Here’s an article about the season three episode “The Convert”, which also has a young James Earl Jones. You have to go to Super-Team Family to find a closer Tarzan/Darth Vader crossover.