Creature from the Black Lagoon (wiki) is a 1954 black-and-white monster film in 3-D; the audience wore viewers with gray polarizing filters, similar to the viewers most commonly used today (although by that time the brief 1950's 3-D movie fad had peaked so many audiences actually saw the film "flat", in 2-D). There were two sequels: Revenge of the Creature (1955), which was also filmed and released in 3-D in hopes of reviving the format, and The Creature Walks Among Us (1956), filmed in 2-D.
IMDB synopsis: A strange prehistoric beast lurks in the depths of the Amazonian jungle. A group of scientists try to capture the animal and bring it back to civilization for study.
Background music from this "making of" video is Sloop John B by the Beach Boys, and is totally stuck in my head. The trailer is below.
An interesting contrast to last week's post: Great Behind-the-Scenes Look at the Visual Effects From Game of Thrones Season 4