Friday the 13th Part III (1982)
They needed an advertising gimmick now that audiences had caught on to their storytelling formula, and 2 months after the release of Part 2 a 3D comedy western from Spain called Coming' At Ya! made a stunning-for-the-time $12 million mostly due to the novelty of its use of 3D. Since Friday the 13th was built around stabbing instruments protruding outward at the screen a 3D version seemed natural. So, Friday the 13th Part 3 became the first Paramount film in 3D since 1956 as well as the first ever 3D film to receive a wide theatrical release from a major Hollywood studio. The scarcity of 3D-equipped theaters in the past demanded 3D films only play on a limited number of screens.
This focus on 3D spilled over to the actors. Initially, they were asked to learn how to use a paddle ball for a planned 3D sequence. When that was scrapped, they looked for any way the actors could do something that would play well in 3D, like Larry Zerner's juggling or throwing a wallet straight at the camera, or another actor dropping a jo-yo down toward a camera. Indeed, many of the actors now recall that there was far more focus on finding cool 3D things for them to do than actually bothering with silly little things like character motivation, or, you know, acting.