Poll: Top 250 Middle Twists

Many memorable plot twists happened near the end of the movie or during the final act, to the degree that most of the time, the notion of 'twist' is associated with surprise endings. But that's ignoring that many classic shockers, surprises or plot-derailing revelations happened in the second act. Which of these middle plot twists from Top 250 movies surprised you the most? After voting, you may discuss the list here Middle or Ending, a twist is still a twist... so SPOILERS AHEAD