26Masters of the Universe's NASA Twist

There was an alternate ending for the "Masters of the Universe" movie, where it is revealed that the United States landed on Eternia (He-Man's home planet) during a NASA mission.
27. In an earlier version of "The Long Kiss Goodnight," Samuel L. Jackson's character was killed off, but it was rewritten after a member of the test audience shouted, "You can't kill Sam Jackson!"
28. The scene depicting the serial killer's death in Peter Jackson's "The Lovely Bones" was reshot to be more gruesome because test audiences felt that the character's death was not violent enough and wanted to see the character in more pain.
29. The 2004 remake of "Dawn of the Dead" by Zack Snyder featured only short one-to-two close-ups of the undead compared to the original. Advances in special effects and makeup made test audiences uncomfortable with zombies that looked too "human."
30. The ending of the 1949 British film "Kind Hearts and Coronets" had to be changed for the American release due to the U.S. Production Code, which stipulated that crime could not be seen to be rewarded.