Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title
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Question: Why are movie closing credits usually animated by scrolling them from the bottom to the top of the screen? Is this because in old times there was no computer animation and the credits text template was scrolled-up mechanically by a man/device? Nowadays there must be thousands of possible ways for credit frame transitions, but still the old one is preferred.

Answer: Why do movie credits scroll from the bottom to the top of the screen?

Question: In Comedy movie The Fisher King, When Parry following Lydia, we can see passengers shown dancing. Location of the scene is Subway. Why people were dancing at the subway? Is it flash mob?

Answer: Why people were dancing at the subway?

Question: My understanding of how the story in movies proceeds is that the writer builds up the expectation of the audience and then concludes it appropriately. I did not see that in American History X. All throughout the movie, the story builds up the expectation that Edward Norton would do something about the Neo-Nazi group that he helped establish before he was sent to Chino. However, the movie "abruptly" ends with the death of his younger brother. Although this might sound very subjective but this seemed like an improper ending to me. Of course I don't want to argue if you liked this ending or not. But I'd like to understand what this ending was supposed to tell us. Why did the movie end in such an unexpected way and how did this ending tie in with the rest of the movie's story and themes?

Answer:
Why did American History X end so unexpectedly?