Remember the awesome scene in Raiders of the Lost Ark in which Indy shoots the swordsman ? Yeah, well, the only reason they put that in the movie is that Harrison Ford had the shits. As we've mentioned before , Ford had dysentery and didn't feel like performing the sword fight the script called for, so they improvised that joke on the set. Apparently, this sort of thing happens in Hollywood all the time. Here are some more examples of memorable scenes (or even entire movies) that only happened because something went wrong.

6 The Empire Strikes Back -- Han Solo Was Frozen Because They Didn't Know If Harrison Ford Would Play Him Again

The carbonite scene in The Empire Strikes Back is arguably the most iconic moment in the entire movie that doesn't include the words "I am your father." In it, Han Solo has been captured by Darth Vader and is frozen alive into a slab of carbonite to be turned over to Jabba the Hutt, all while the love of his life watches helplessly.

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Princess Leia is there too.

The scene also includes the dialogue that defines Han Solo: When Leia says "I love you" to him for the first time ever, he just looks at her and says "I know." The man is being dragged by Stormtroopers into a machine that freezes people, and for all he knows these are his last living moments before Jabba uses him to refresh several hundred pina coladas, and somehow he still finds the time to be cooler than everyone else in the room.

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But They Only Included It Because ...

That scene exists because Harrison Ford hated Han Solo and wasn't sure if he even wanted to come back for another Star Wars film. None of what we described was in the original script. The movie was supposed to end with Han and Chewie flying off in the Millennium Falcon, safe and sound.

This changed for practical, not artistic, reasons. See, unlike Mark Hamill and Carrie Fisher, Ford didn't sign up for two more movies after the success of the first Star Wars. He thought that Han should be killed off because he wasn't interesting to him. Since Ford was being such an indecisive Nancy (that's a saying, right? It sounds like it is), George Lucas needed to figure out a way to "freeze" the character for a while, in case they later had to explain why he never appeared again. And so Lucas, as one of the greatest creative minds of our time, decided to literally freeze the character.