Newly arrived in California from New Jersey, teenager Daniel (Ralph Macchio) almost immediately runs afoul of karate-trained high school bullies. He is rescued by Japanese janitor Miyagi (Noriyuki "Pat" Morita), who agrees to teach Daniel how to harness karate for good instead of brutality. The film culminates in a championship karate bout, pitting Daniel against his sworn enemy Johnny (William Zabka) -- the cruel and thuggish boyfriend of Ali (Elisabeth Shue), with whom Daniel has fallen in love (and vice versa). Real-life karate champ Chuck Norris was offered the role of Kreese, the sadistic coach who goads Johnny into fighting dirty, but Norris turned down the role, refusing to be shown utilizing his skills negatively onscreen. Vastly popular, The Karate Kid spawned three sequels of rapidly descending merit, as well as a Saturday-morning cartoon series.~Hal Erickson
Commentary with director John G. Avildsen, writer Robert Mark Kamen and actors Ralph Macchio and Pat Morita
"The Way of the Karate Kid" multi-part making-of featurette
What an exceptional picture. It's one of the very best underdog/inspirational movies of all time.
Sony has done a marvelous job with this Blu-ray release. The picture quality is now the absolute finest the movie has ever looked. I highly recommend it. I double dipped.
This review is from The Karate Kid [Blu-ray] [SteelBook] [Only @ Best Buy] 
I would recommend this to a friend
Rated 5 out of 5 stars
The Karate Kid (1984 Version)
This movie was great! I liked getting to know both Mr. Miyagi and Daniel better during the movie and seeing how the characters changed as the movie progressed. Mr. Miyagi is a really fun character and I love the relationship between him and Daniel.
This film has sentimental value to me. I grew up with it, on it and emulated these teachings within throughout my youth. And now it's on 4K disc and coupled with the $10 Black Friday price last year it's a GREAT VALUE. The iconic 80's film never looked and sounded so good! It's a "cruel summer" indeed! It's nowhere near as flashy as a modern day release is on the 4K format, but you can't deny how great it looks for its age.
Being a child of the 80s, this was one of those movies that I watched over and over again as a kid. When I saw this anniversary version, I had to have it. Every time I watch it I'm my six-year-old self again!
The movie looks great for it to be 35 years old, and it looks like the studio did its best to clean up the picture; however, there is so much one can do with these films. You will see a grainy image here and there, but keep in mind that this is an old movie getting the UHD treatment. The only gripe I have with it is the lack of extras. There is one featurette with Martin Kove (Kreese), William Zabka (Lawrence), and main man Ralph Macchio (LaRusso) that is under 11 minutes talking about their experiences during the film. Coincidentally, all three are in Cobra Kai (the series), and LaRusso sort of plugs the show for a second. Other than that, the theatrical trailer that if anything, will give you a clear comparison of the UHD film, versus HD (at best, as the quality of the trailer is way lower than the film itself). Must buy? You bet, especially if you grew up on this stuff, and you have the equipment to take advantage of the film quality.
Good Colors but not a huge improvement over Blu-Ra
Owned for 2 weeks when reviewed.
I have read a lot of reviews on this before I bought it. Most said it was great. I have the blu-ray and it looked good. The 4k at first viewing i thought it looked darker than the blu-ray but that happens from time to time. It still has heavy grain but it has always looked like that. I didn't see a huge change but I did see improvements in the final fight scene. Don't get me wrong, the movie looks great for its age, but it just wasn't a huge improvement over the blu-ray. I will say the second time I watched it, it was not as dark as I thought. Maybe just a hair darker than the blu-ray in dark scenes.
A bonafide 80's classic. When you think of top 80's movies, you think of RoboCop, Back to the Future, Ghostbusters, ET, The Goonies, Raiders of the Lost Ark, and THE KARATE KID! In fact, I doubt few would argue with me if I called The Karate Kid one of the best movies ever made. I won't lie, some parts of the movie are quite dated. However, the central premise and message of the movie are timeless. Check it out!