Movies with the same plot.

You forgot Rio Lobo, same story.

Kill Bill = Lady Snowblood

A woman with bad-ass fighting skills gets revenge on a group of people, crossing their names off a list as she kills them.

This one is a bit confusing because Tarantino rips off a lot of shots and stylistic elements too. Is it just a remake?

A series of random events puts a man in an incriminating position when another person is murdered. He goes on the run to try to find the real killer and clear his name. While traveling he sees his picture on the front page of newspapers as the murderer, and needs to hide his identity. He meets up with a beautiful blonde who initially seems to be helping him but at the earliest chance betrays him. He travels across country evading capture by both the police and the criminals who are wealthy, powerful members of society. He ends up in the criminals’ house where he hears the details of the plot and figures out that the girl is actually on his side. The final scene takes place at a well-known locale/National Monument where the police finally are convinced of his story. Bad guys die. People end up hanging by their fingertips from Natinal Monuments. He ends up with the blonde.

The 39 Steps, Saboteur and North by Northwest (Hitchcock really really liked this plot)

Nuclear-armed bombers start an unauthorized attack against the Soviet Union, threatening nuclear armageddon. The very measures put into place to ensure a successful nuclear strike defeat efforts to stop the attack, and so the absurdity of planning to destroy the world is shown: Dr. Strangelove (done as a black comedy) and Failsafe (done as a thriller/tragedy).

There was once an orphan who had grown up on an isolated farm with a childless aunt and uncle. When separated from them, the orphan went on a quest with several other characters, one a metal man and another a large furry creature. They were advised by a wise old man to defeat a certain villain, but instead they were captured. Armed with a powerful item they had acquired, the orphan freed the others and killed the villain. Though they were all rewarded for their heroism, the orphan had acquired no riches, no kingdom to rule, and no romantic partner.

Star Wars and The Wizard of Oz

Our hero, who had grown up as an orphan hearing about great adventures of old, found himself going on a quest with several others in which they had to destroy a powerful object and kill a villain. A wise old man who aided them sacrificed himself for them, but he returned later to give them advice. The hero lost an appendage in a battle with the villain and learned that the almost magical powers that he had acquired could be misused. Although all the central characters were rewarded, the hero has no family to return to and no romantic partner.

Star Wars and The Lord of the Rings

And you can find resemblances of Star Wars to many other films. Star Wars is an archetypal quest film. Indeed, it’s the archetypal quest film. Lucas intended it that way. He knew very well that he was stealing from many other sources. In many of the comparisons in this thread the screenwriter knew exactly what he was doing. The resemblances are no coincidence.

Are you sure it wasn’t Liberty Stands Still with Linda Fiorentino?

I didn’t forget it. I just don’t agree. Have you ever seen Rio Lobo? Yes, Wikipedia says they’re similar in that all three are “varying the idea of a sheriff defending his office against belligerent outlaw elements in the town” but to me they’re different movies plots. Rio Lobo is about a search for traitors who sold information to the South during the Civil War. Especially when you compare Rio Bravo and El Dorado. Man they could practically use the same dialog.

The World of Suzie Wong makes this a triumverate. Except that “The Cloud Song” was a huge international non-hit.

Come on, SDMB, how could you miss this one: A couple of childlike 30 year olds live in an idealistic compound, waiting for the day when they will be sent to an eternal paradise. They escape, only to find that there is no paradise, and they are actually living organ banks for the rich and powerful.

parts: the clonus horror and The Island, of course.

There were some copyright problems, as the man who collaborated on the Thunderball screenplay claimed some credit. The novel was written later on.

The collaborative authors still retained a copyright and made Never Say Never Again, with the same plot of Thunderball, after Roger Moore had taken over as Bond. This was Sean Connery’s last outing as Bond. Whether or not it is canon is disputed.

Jimmy Stewart holiday classic **The Shop Around The Corner **became a musical with **In The Good Ole Summertime ** but Nora Ephron took an internet take on it with You’ve Got Mail.

A pair of musicians/singers witness a mob killing and go on the run, finding musical employment disguised as the opposite sex/pretending to be disguised as the opposite sex.

Some Like It Hot and Connie and Carla.

Or simply disguised as a nun: Sister Act

Toy Story 1 2 and 3

Rich white guy displays pseudo-magical powers while simultaneously putting out creepy child molester vibes.

Charlie and the Chocolate Factory and This is It

  1. Shmuck who doesn’t ever want to get married stands to inherit a huge chunk of change if he’s married by a certain date and time. Which is less than 24 hours away! All his exes turn him down, so his buddy places an ad in the paper telling the world about the inheritance, and a mob of greedy brides shows up, beats the crap out of his friends, and cause general pandemonium until the one girl who loved him when he was a broke shmuck shows up and they get married in the nick of time.

The Bachelor and The Brideless Groom (Three Stooges short). Granted, The Bachelor is billed as a remake of Seven Chances, and the Stooges episode was probably based on it too.

Speaking of the Stooges, I always thought Trading Places was derived from Hoi Polloi, where rich people bet on whether you can turn bums into gentlemen.

  1. Sentinent robot grows attached to his humans and wants to become human himself.

A.I., Bicentennial Man, and just about every Data episode of ST:TNG.

A more likely origin would be the Mark Twain story The Million Pound Banknote

It was made into a 1954 movie starring Gregory Peck. That’s too late to influence the Stooges short, but could’ve helped shape Trading Places.

That aspect (gender-reversed) would include My Fair Lady (and its stage inspiration, Pygmalion).

Can’t believe no one has yet mentioned (if they did, sorry I overlooked it, but I did look) the enormous “kid becomes a grownup/grownup becomes a kid” genre, which includes the sub-genre “kid and grownup switch bodies”. A few such films:

Freaky Friday
Big
17 Again
13 Going On 30
Vice Versa
Peggy Sue Got Married
Like Father Like Son

John Cusack is a disillusioned assassin considering retirement. He eventually earns the love of a good woman, has a climactic battle against the forces of The Man (as portrayed by Dan Ackroyd), and hits the road to begin a new life.

War, Inc. and Grosse Pointe Blank