Only movies that have reached a certain plateau of pop culture immortality can have a sequel TV series over 30 years later that people would watch, or even care about. 1984's The Karate Kid, the martial arts classic that made a top-billed star out of Ralph Macchio and an Academy Award nominee out of Pat Morita, is one such movie. If you haven't seen Cobra Kai yet, it's actually worth paying for a month of YouTube Red just to binge it.

One of the biggest ways that we like to reminisce about movies we loved 10, 20, 30+ years ago is to read up on what went into making them, and the often-fascinating stories that surround their production and subsequent release. Even just focusing on only the original Karate Kid movie– which is what this list does– there is plenty to learn about it that will delight and surprise even the biggest fans of the franchise.

20 The Surprising First Choice(s) To Play Daniel

Sean Penn in Bad Boys 1983 via medialifecrisis.com

Just like it's hard to imagine anyone but Michael J. Fox playing Marty McFly, it's a struggle to picture anyone but Ralph Macchio being trained by Mr. Miyagi and delivering that iconic crane kick. But just like with Back to the Future, Macchio wasn't actually the first choice to play the lead.

Among those approached to play Daniel LaRusso– who originally had the last name Webber– before Macchio were Charlie Sheen, C. Thomas Howell, and perhaps most surprising, Sean Penn.

19 A Pivotal Scene Was Almost Cut

Pat Morita and Ralph Macchio in the drinking scene from The Karate Kid via looper.com

One of the most touching scenes in the entire movie– and the one that most likely earned Pat Morita his Best Supporting Actor Oscar nomination– is the one where Mr. Miyagi drinks too much and tells Daniel about his tragic past, including losing his wife and child.

Amazingly, this scene almost got cut! Producers felt that it slowed down the pace of the movie too much, but director John G. Avildsen fought to keep it. Sometimes, directors really do know best.

18 Ralph Macchio Got To Keep The Car

Ralph Macchios car from Karate Kid via MotorTrend.com

There were a lot of reasons to be envious of Daniel LaRusso– he got to learn karate from an experienced master, he got revenge against his bullies, and he got to kiss Elisabeth Shue. But perhaps none of those things came as close to eliciting jealousy from Karate Kid fans as the pristine 1948 Ford Super De Luxe that Mr. Miyagi gave to Daniel as a gift.

Are you ready to be equally jealous of Ralph Macchio? He got to keep that car for real after the movie wrapped, and still has it to this day.

17 William Zabka (Johnny) Had No Previous Karate Experience

William Zabka in The Karate Kid via Geek Tyrant.com

Anyone who has seen Cobra Kai knows that William Zabka, whose debut movie was playing Johnny in The Karate Kid, still has some respectable martial arts skills. In fact, he holds a black belt in the martial art known as Tang Soo Dee.

However, he had zero experience with any form of martial arts prior to his training for The Karate Kid, but was instead a wrestler. He obviously took to karate and decided to continue studying on his own in the years that followed.

16 Pat Morita's Unusual Name Credit

Pat Morita trains Ralph Macchio in The Karate Kid via Columbia Pictures

For almost the entirety of Pat Morita's 40+ year acting career, he was credited under the nickname "Pat" rather than his given name of Noriyuki. That said, in all of his Karate Kid roles, he is credited as "Noriyuki 'Pat' Morita," a credit which he didn't use anywhere else.

Why the unusual credit? It was insisted upon by Karate Kid producers in order to draw attention to the actor's Japanese heritage– even though Morita was born and raised in the United States and had been using the name Pat professionally for almost 20 years at that point.

15 "You're The Best" Was Written For A Different Fight Movie

Sylvester Stallone in Rocky II via TheMovieDatabase.com

One thing that movies are sorely lacking these days are catchy theme songs that are forever associated with the movies for which they were written. The 1980s was the pinnacle of this phenomenon... and was a very lucrative time for Kenny Loggins.

Karate Kid's "You're The Best" is a classic '80s movie theme, but interestingly enough, it was originally penned for a different movie entirely: Rocky III. But it was passed over for "Eye of the Tiger," leaving it to find a home in a different movie about an underdog fighting his way to the top.

14 The "Original" Karate Kid

Karate Kid and Robin from Justice League Adventures via dc.fandom.com

According to Ralph Macchio, most of the cast and crew of The Karate Kid weren't too fond of the movie's title, but it's obvious that the filmmakers really wanted to use it. In fact, they liked it so much that they had to get permission to use it.

DC Comics already had a character called Karate Kid– who is still an active character to this day– but was nice enough to grant special permission for the name to be used for the 1984 film and its subsequent sequels. They are even thanked in the credits for that kind gesture.

13 Elisabeth Shue Took A Break From Harvard To Star

Ralph Macchio and Elisabeth Shue from The Karate Kid via reddit.com

An earlier item in this list pointed out a connection between the Karate Kid and Back to the Future franchises, but casting changes aren't the only things that link the two iconic series– they also share a love interest in Elisabeth Shue (though she didn't join BttF until the sequel).

Knowing a good opportunity when she saw it, Shue even took a break from her studies at Harvard to film film the role of Ali in Karate Kid. But she didn't want to take another schooling break when it came time for the sequel, so she declined to return.

12 A Japanese Cinema Legend Almost Played Mr. Miyagi

Toshiro Mifune in Seven Samurai via GrouchoReviews.com

Ralph Macchio wasn't the only member of The Karate Kid's cast that wasn't the first choice for his role. Pat Morita also wasn't the first call made to fill his future role in the film, instead being preceded by Toshirō Mifune, famous for appearing in many of iconic Japanese director Akira Kurosawa's films.

Producers felt Mifune's take on Mr. Miyagi would've been far too serious and decided to pass. Ironically, they were also initially skeptical of Pat Morita due to his comedic background.

11 Daniel And Johnny Were Meant To Have Two More Fights

William Zabka and Ralph Macchio in The Karate Kid via RollingStone.com

The Karate Kid might be built around several major conflicts, but none are as pivotal to the plot as the rivalry between Daniel and apparent bully Johnny– although, as this list will address later, perhaps it isn't so cut-and-dry who the hero and villain truly are in that dynamic.

Daniel and Johnny really only butt heads a couple of times in the movie, saving most of the tension for the big tournament at the end. The original script included two additional scuffles between the two which were actually shot but then cut for pacing reasons.