Robin Wright and Cary Elwes were smitten with each other during filming, naturally helping their chemistry in the movie. Cary said that he "couldn't concentrate on much of anything after that first encounter with Robin."
Director Rob Reiner considered a lot of different actors to play Fezzik before André The Giant finally got the part. One of the actors considered to play the part was Richard Kiel, who is most famous for portraying Jaws in two James Bond movies.
During the fight with the ROUS in the fire swamp, when the ROUS attacks Buttercup and bites her dress, you can see the silhouette of a crew member's hand holding the dress in the ROUS's teeth.
When Buttercup pushes Westley down the hill and she falls down after him, when they both come to a stop Buttercup ends up several feet farther down the hill then Westley. The movie then cuts to a scene of Humperdinck, then back to Buttercup and Westley. However, they are now shown to be right next to each other.
Vizzini (Wallace Shawn) was hired by Prince Humperdinck to kill Buttercup in order to start a war between the kingdoms of Florin and Guilder. The novel (but not the film) provides an elaborate backstory in which Humperdinck is engaged to marry a Guilderian princess to end strife between Florin and Guilder, but when the princess is revealed to be secretly bald, he furiously cancels the engagement and orders his advisors to find the most beautiful Florinese woman possible as his new bride, one who will be extremely popular with the common people, making her assassination an ideal pretext for war.
Q
Is there a sequel?
A
There is no film sequel. For years a sequel to the book, named Buttercup's Baby, was rumored to be in the works. Some editions of the book even contained an address to which readers could write for information. Those who wrote in received a short sample chapter from the rumored book. However, this sample chapter was all that existed. In a 2007 interview, Goldman hinted that he may write the full book, but as of yet it hasn't come to light.
Q
Who killed Inigo Montoya's father?
A
The six-fingered man who killed Inigo Montoya's father turned out to be Count Rugen (Christopher Guest). Prepare to die!