There are dozens of book-to-film adaptations. Some of the earliest movies were based on books. Some adaptations have adaptations. Some are much better than others. My favorite book-to-film adaptation is "Charlie & the Chocolate Factory" (1971). Per the title, it is based on Roald Dahl's "Charlie and the Chocolate Factory." There are four book-to-film adaptations of this book, but this one is the best. It sticks to the story and has excellent acting. The 1971 version of "Charlie & the Chocolate Factory" sticks to the story more than others. The movie holds true with the television machine. In the movie, one of the children gets sent to the TV, just as the book decreed. In both the book and the movie, Violet turns into a blueberry. In both the book and the movie, Augustus falls into the chocolate river and gets stuck in the tube. Unlike the book, Veruca is labeled "a bad egg" by the geese in the movie. In the book, she is labeled a bad nut by the squirrels. Other than that, the children face the same fate as in the book. At the end of the movie, we see Charlie, Willy Wonka, and Charlie's grandfather going into the glass elevator. This is the same as in the book. Not only does the movie follow the book, but the acting supports the characters. This adaptation of "Charlie and the Chocolate Factory" has great acting. The actors knew their characters and knew how to portray their personalities. Gene Wilder (Willy Wonka) exemplifies this trait. When the audience first saw Willy Wonka, he was limping with a cane. His cane got stuck in the cobblestone, and he seemed to fall, only to catch himself in a somersault. As a viewer, we assume that he was just showing off. This is incorrect. In an interview, Wilder explained that he did this because he wanted to confuse the young competitors. After that action, no one could tell if he was being genuine or teasing them. In the book, his character is also like this. Wonka does not tell his contestants everything that will happen or what goes on within the factory. Augustus acts like a food-loving pig, which is how he is portrayed. When we first see him, we can tell that his weakness will be the sweets and food that lie ahead. When we meet Veruca, we can tell that she is an entitled girl who thinks she deserves whatever she wants. After we meet her, we can determine that, somewhere along the line, she will be told no and refuse that answer. When we meet Violet, she brags about her gum-chewing abilities. This leads us to believe that a gum-related object will lead to her demise. Mike Teavee shows a devotion to television when we first meet him. This teaches us that he will have some sort of issue with television. All of these activities occur, and we can expect them due to how well the acting is done. The acting is well-thought-out and inviting. In conclusion, the 1971 "Charlie & the Chocolate Factory" sticks to the original story and has great acting. Almost all punishments are the same as what Roald Dahl described. The characters retained their original names and personalities. The actors introduce their characters in a clear way that sticks to their book versions. These aspects are few and far between for most book-to-film adaptations. For these reasons, I can confidently say that "Charlie & the Chocolate Factory" (1971) is the best book-to-film adaptation I have ever seen.